104142431 has 4 divisors (see below), whose sum is σ = 106564392. Its totient is φ = 101720472.

The previous prime is 104142427. The next prime is 104142449. The reversal of 104142431 is 134241401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 104142431 - 2² = 104142427 is a prime.

It is a super-2 number, since 2×104142431² = 21691291869179522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104142481) 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, 1210916 + ... + 1211001.

It is an arithmetic number, because the mean of its divisors is an integer number (26641098).

Almost surely, 2^104142431 is an apocalyptic number.

104142431 is a deficient number, since it is larger than the sum of its proper divisors (2421961).

104142431 is an equidigital number, since it uses as much as digits as its factorization.

104142431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421960.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 104142431 is about 10205.0198921903. The cubic root of 104142431 is about 470.4815209933.

Adding to 104142431 its reverse (134241401), we get a palindrome (238383832).

The spelling of 104142431 in words is "one hundred four million, one hundred forty-two thousand, four hundred thirty-one".