104312440 has 32 divisors (see below), whose sum is σ = 238556160. Its totient is φ = 41040000.

The previous prime is 104312437. The next prime is 104312443. The reversal of 104312440 is 44213401.

It is an interprime number because it is at equal distance from previous prime (104312437) and next prime (104312443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104312443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18936 + ... + 23815.

It is an arithmetic number, because the mean of its divisors is an integer number (7454880).

Almost surely, 2^104312440 is an apocalyptic number.

104312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104312440 is an abundant number, since it is smaller than the sum of its proper divisors (134243720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104312440 is a wasteful number, since it uses less digits than its factorization.

104312440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42823 (or 42819 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 104312440 is about 10213.3461705750. The cubic root of 104312440 is about 470.7373968699.

Adding to 104312440 its reverse (44213401), we get a palindrome (148525841).

The spelling of 104312440 in words is "one hundred four million, three hundred twelve thousand, four hundred forty".