104121940 has 48 divisors (see below), whose sum is σ = 249337872. Its totient is φ = 36182016.

The previous prime is 104121911. The next prime is 104121971. The reversal of 104121940 is 49121401.

It can be written as a sum of positive squares in 8 ways, for example, as 22905796 + 81216144 = 4786^2 + 9012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7359 + ... + 16198.

It is an arithmetic number, because the mean of its divisors is an integer number (5194539).

Almost surely, 2^104121940 is an apocalyptic number.

104121940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104121940 is an abundant number, since it is smaller than the sum of its proper divisors (145215932).

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

104121940 is a wasteful number, since it uses less digits than its factorization.

104121940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596 (or 23594 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 104121940 is about 10204.0158761147. The cubic root of 104121940 is about 470.4506617521.

The spelling of 104121940 in words is "one hundred four million, one hundred twenty-one thousand, nine hundred forty".