10120155242 has 4 divisors (see below), whose sum is σ = 15180232866. Its totient is φ = 5060077620.

The previous prime is 10120155217. The next prime is 10120155263. The reversal of 10120155242 is 24255102101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9757290841 + 362864401 = 98779^2 + 19049^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530038809 + ... + 2530038812.

Almost surely, 2^10120155242 is an apocalyptic number.

10120155242 is a deficient number, since it is larger than the sum of its proper divisors (5060077624).

10120155242 is an equidigital number, since it uses as much as digits as its factorization.

10120155242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060077623.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 10120155242 its reverse (24255102101), we get a palindrome (34375257343).

The spelling of 10120155242 in words is "ten billion, one hundred twenty million, one hundred fifty-five thousand, two hundred forty-two".