2142860521 has 8 divisors (see below), whose sum is σ = 2190589704. Its totient is φ = 2095537920.

The previous prime is 2142860497. The next prime is 2142860537. The reversal of 2142860521 is 1250682412.

It can be written as a sum of positive squares in 4 ways, for example, as 87235600 + 2055624921 = 9340^2 + 45339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2142860521 - 2⁷ = 2142860393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142867521) 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, 90976 + ... + 112081.

It is an arithmetic number, because the mean of its divisors is an integer number (273823713).

Almost surely, 2^2142860521 is an apocalyptic number.

It is an amenable number.

2142860521 is a deficient number, since it is larger than the sum of its proper divisors (47729183).

2142860521 is a wasteful number, since it uses less digits than its factorization.

2142860521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203291.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2142860521 is about 46291.0414767264. The cubic root of 2142860521 is about 1289.2326668660.

The spelling of 2142860521 in words is "two billion, one hundred forty-two million, eight hundred sixty thousand, five hundred twenty-one".