10120040440 has 32 divisors (see below), whose sum is σ = 22971606480. Its totient is φ = 4012191232.

The previous prime is 10120040401. The next prime is 10120040461. The reversal of 10120040440 is 4404002101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114954 + ... + 1123993.

Almost surely, 2^10120040440 is an apocalyptic number.

10120040440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10120040440 is an abundant number, since it is smaller than the sum of its proper divisors (12851566040).

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

10120040440 is a wasteful number, since it uses less digits than its factorization.

10120040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239071 (or 2239067 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10120040440 its reverse (4404002101), we get a palindrome (14524042541).

The spelling of 10120040440 in words is "ten billion, one hundred twenty million, forty thousand, four hundred forty".