104440142431 has 4 divisors (see below), whose sum is σ = 104558422072. Its totient is φ = 104321862792.

The previous prime is 104440142393. The next prime is 104440142437. The reversal of 104440142431 is 134241044401.

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 104440142431 - 2¹¹ = 104440140383 is a prime.

It is a super-2 number, since 2×104440142431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104440142431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104440142437) 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, 59138496 + ... + 59140261.

It is an arithmetic number, because the mean of its divisors is an integer number (26139605518).

Almost surely, 2^104440142431 is an apocalyptic number.

104440142431 is a deficient number, since it is larger than the sum of its proper divisors (118279641).

104440142431 is an equidigital number, since it uses as much as digits as its factorization.

104440142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118279640.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 104440142431 its reverse (134241044401), we get a palindrome (238681186832).

The spelling of 104440142431 in words is "one hundred four billion, four hundred forty million, one hundred forty-two thousand, four hundred thirty-one".