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124141409 = 717734487
BaseRepresentation
bin1110110011000…
…11111101100001
322122121000222222
413121203331201
5223240011114
620152440425
73035120210
oct731437541
9278530888
10124141409
1164090307
12356a9115
131c946c72
14126b7077
15ad7298e
hex7663f61

124141409 has 4 divisors (see below), whose sum is σ = 141875904. Its totient is φ = 106406916.

The previous prime is 124141403. The next prime is 124141411. The reversal of 124141409 is 904141421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904141421 = 4671936063.

It is not a de Polignac number, because 124141409 - 24 = 124141393 is a prime.

It is a super-2 number, since 2×1241414092 = 30822178857010562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124141403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8867237 + ... + 8867250.

It is an arithmetic number, because the mean of its divisors is an integer number (35468976).

Almost surely, 2124141409 is an apocalyptic number.

It is an amenable number.

124141409 is a deficient number, since it is larger than the sum of its proper divisors (17734495).

124141409 is an equidigital number, since it uses as much as digits as its factorization.

124141409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17734494.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 124141409 is about 11141.8763680091. The cubic root of 124141409 is about 498.8525808729.

The spelling of 124141409 in words is "one hundred twenty-four million, one hundred forty-one thousand, four hundred nine".

Divisors: 1 7 17734487 124141409