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124142069 = 2920692
BaseRepresentation
bin1110110011001…
…00000111110101
322122121001220102
413121210013311
5223240021234
620152443445
73035122142
oct731440765
9278531812
10124142069
1164090857
12356a9585
131c94735c
14126b73c9
hex76641f5

124142069 has 6 divisors (see below), whose sum is σ = 128484930. Its totient is φ = 119803376.

The previous prime is 124142047. The next prime is 124142071. The reversal of 124142069 is 960241421.

It can be written as a sum of positive squares in 3 ways, for example, as 87025 + 124055044 = 295^2 + 11138^2 .

It is not a de Polignac number, because 124142069 - 28 = 124141813 is a prime.

It is a super-2 number, since 2×1241420692 = 30822506591201522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124142099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58967 + ... + 61035.

It is an arithmetic number, because the mean of its divisors is an integer number (21414155).

Almost surely, 2124142069 is an apocalyptic number.

It is an amenable number.

124142069 is a deficient number, since it is larger than the sum of its proper divisors (4342861).

124142069 is an frugal number, since it uses more digits than its factorization.

124142069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 124142069 is about 11141.9059859613. The cubic root of 124142069 is about 498.8534649242.

Multiplying 124142069 by its sum of digits (29), we get a square (3600120001 = 600012).

124142069 divided by its sum of digits (29) gives a square (4280761 = 20692).

The spelling of 124142069 in words is "one hundred twenty-four million, one hundred forty-two thousand, sixty-nine".

Divisors: 1 29 2069 60001 4280761 124142069