10120120042 has 24 divisors (see below), whose sum is σ = 15539940900. Its totient is φ = 4942486080.

The previous prime is 10120120019. The next prime is 10120120051. The reversal of 10120120042 is 24002102101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10036232761 + 83887281 = 100181^2 + 9159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1094334 + ... + 1103542.

Almost surely, 2^10120120042 is an apocalyptic number.

10120120042 is a deficient number, since it is larger than the sum of its proper divisors (5419820858).

10120120042 is an equidigital number, since it uses as much as digits as its factorization.

10120120042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462 (or 9391 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10120120042 its reverse (24002102101), we get a palindrome (34122222143).

The spelling of 10120120042 in words is "ten billion, one hundred twenty million, one hundred twenty thousand, forty-two".