10120012440 has 32 divisors (see below), whose sum is σ = 30360037680. Its totient is φ = 2698669952.

The previous prime is 10120012439. The next prime is 10120012453. The reversal of 10120012440 is 4421002101.

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

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, 42166599 + ... + 42166838.

Almost surely, 2^10120012440 is an apocalyptic number.

10120012440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10120012440 is an abundant number, since it is smaller than the sum of its proper divisors (20240025240).

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

10120012440 is a wasteful number, since it uses less digits than its factorization.

10120012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84333451 (or 84333447 counting only the distinct ones).

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

Adding to 10120012440 its reverse (4421002101), we get a palindrome (14541014541).

The spelling of 10120012440 in words is "ten billion, one hundred twenty million, twelve thousand, four hundred forty".