104139243 has 16 divisors (see below), whose sum is σ = 166148640. Its totient is φ = 64085472.

The previous prime is 104139173. The next prime is 104139257. The reversal of 104139243 is 342931401.

104139243 is a `hidden beast` number, since 1 + 0 + 413 + 9 + 243 = 666.

It is not a de Polignac number, because 104139243 - 2⁸ = 104138987 is a prime.

It is a super-2 number, since 2×104139243² = 21689963865226098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (104139293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147996 + ... + 148697.

It is an arithmetic number, because the mean of its divisors is an integer number (10384290).

Almost surely, 2^104139243 is an apocalyptic number.

104139243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

104139243 is a deficient number, since it is larger than the sum of its proper divisors (62009397).

104139243 is a wasteful number, since it uses less digits than its factorization.

104139243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296715 (or 296709 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 104139243 is about 10204.8636933572. The cubic root of 104139243 is about 470.4767201631.

The spelling of 104139243 in words is "one hundred four million, one hundred thirty-nine thousand, two hundred forty-three".