104121240 has 32 divisors (see below), whose sum is σ = 312364080. Its totient is φ = 27765632.

The previous prime is 104121239. The next prime is 104121247. The reversal of 104121240 is 42121401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104121247) 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, 433719 + ... + 433958.

Almost surely, 2^104121240 is an apocalyptic number.

104121240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104121240 is an abundant number, since it is smaller than the sum of its proper divisors (208242840).

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

104121240 is a wasteful number, since it uses less digits than its factorization.

104121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867691 (or 867687 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 104121240 is about 10203.9815758360. The cubic root of 104121240 is about 470.4496074875.

Adding to 104121240 its reverse (42121401), we get a palindrome (146242641).

The spelling of 104121240 in words is "one hundred four million, one hundred twenty-one thousand, two hundred forty".