2156142760 has 32 divisors (see below), whose sum is σ = 4854313800. Its totient is φ = 861925120.

The previous prime is 2156142731. The next prime is 2156142763. The reversal of 2156142760 is 672416512.

It can be written as a sum of positive squares in 4 ways, for example, as 651168324 + 1504974436 = 25518^2 + 38794^2 .

It is not an unprimeable number, because it can be changed into a prime (2156142763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52590 + ... + 84130.

Almost surely, 2^2156142760 is an apocalyptic number.

2156142760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156142760 is an abundant number, since it is smaller than the sum of its proper divisors (2698171040).

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

2156142760 is a wasteful number, since it uses less digits than its factorization.

2156142760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33261 (or 33257 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2156142760 is about 46434.2843166555. The cubic root of 2156142760 is about 1291.8908952013.

The spelling of 2156142760 in words is "two billion, one hundred fifty-six million, one hundred forty-two thousand, seven hundred sixty".