2123402120 has 32 divisors (see below), whose sum is σ = 5460177600. Its totient is φ = 728023488.

The previous prime is 2123402111. The next prime is 2123402137. The reversal of 2123402120 is 212043212.

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, 3791510 + ... + 3792069.

It is an arithmetic number, because the mean of its divisors is an integer number (170630550).

Almost surely, 2^2123402120 is an apocalyptic number.

2123402120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123402120 is an abundant number, since it is smaller than the sum of its proper divisors (3336775480).

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

2123402120 is a wasteful number, since it uses less digits than its factorization.

2123402120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583597 (or 7583593 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2123402120 is about 46080.3875851755. The cubic root of 2123402120 is about 1285.3184714334.

Adding to 2123402120 its reverse (212043212), we get a palindrome (2335445332).

The spelling of 2123402120 in words is "two billion, one hundred twenty-three million, four hundred two thousand, one hundred twenty".