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124991793 = 3213887977
BaseRepresentation
bin1110111001100…
…11100100110001
322201012020111200
413130303210301
5223444214133
620223001413
73045261363
oct734634461
9281166450
10124991793
1164611203
1235a39269
131cb84054
1412858d33
15ae8e913
hex7733931

124991793 has 6 divisors (see below), whose sum is σ = 180543714. Its totient is φ = 83327856.

The previous prime is 124991791. The next prime is 124991819. The reversal of 124991793 is 397199421.

It can be written as a sum of positive squares in only one way, i.e., 81866304 + 43125489 = 9048^2 + 6567^2 .

It is not a de Polignac number, because 124991793 - 21 = 124991791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124991791) 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, 6943980 + ... + 6943997.

It is an arithmetic number, because the mean of its divisors is an integer number (30090619).

Almost surely, 2124991793 is an apocalyptic number.

It is an amenable number.

124991793 is a deficient number, since it is larger than the sum of its proper divisors (55551921).

124991793 is a wasteful number, since it uses less digits than its factorization.

124991793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13887983 (or 13887980 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 124991793 is about 11179.9728532765. The cubic root of 124991793 is about 499.9890570938.

The spelling of 124991793 in words is "one hundred twenty-four million, nine hundred ninety-one thousand, seven hundred ninety-three".

Divisors: 1 3 9 13887977 41663931 124991793