2120156024 has 32 divisors (see below), whose sum is σ = 4552178400. Its totient is φ = 906840960.

The previous prime is 2120156011. The next prime is 2120156029. The reversal of 2120156024 is 4206510212.

It is a happy number.

It is a super-2 number, since 2×2120156024² = 8990123132206977152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120156029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8687 + ... + 65694.

It is an arithmetic number, because the mean of its divisors is an integer number (142255575).

Almost surely, 2^2120156024 is an apocalyptic number.

It is an amenable number.

2120156024 is an abundant number, since it is smaller than the sum of its proper divisors (2432022376).

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

2120156024 is a wasteful number, since it uses less digits than its factorization.

2120156024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74903 (or 74899 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2120156024 is about 46045.1520140829. The cubic root of 2120156024 is about 1284.6631716202.

Adding to 2120156024 its reverse (4206510212), we get a palindrome (6326666236).

The spelling of 2120156024 in words is "two billion, one hundred twenty million, one hundred fifty-six thousand, twenty-four".