104242531 has 4 divisors (see below), whose sum is σ = 109729000. Its totient is φ = 98756064.

The previous prime is 104242519. The next prime is 104242543. The reversal of 104242531 is 135242401.

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

It is an interprime number because it is at equal distance from previous prime (104242519) and next prime (104242543).

It is a cyclic number.

It is not a de Polignac number, because 104242531 - 2⁵ = 104242499 is a prime.

It is a super-2 number, since 2×104242531² = 21733010538571922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104242031) 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, 2743206 + ... + 2743243.

It is an arithmetic number, because the mean of its divisors is an integer number (27432250).

Almost surely, 2^104242531 is an apocalyptic number.

104242531 is a deficient number, since it is larger than the sum of its proper divisors (5486469).

104242531 is an equidigital number, since it uses as much as digits as its factorization.

104242531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486468.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 104242531 is about 10209.9231632760. The cubic root of 104242531 is about 470.6322124352.

Adding to 104242531 its reverse (135242401), we get a palindrome (239484932).

The spelling of 104242531 in words is "one hundred four million, two hundred forty-two thousand, five hundred thirty-one".