2142159100 has 36 divisors (see below), whose sum is σ = 4676356944. Its totient is φ = 851726080.

The previous prime is 2142159077. The next prime is 2142159109. The reversal of 2142159100 is 19512412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142159109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47437 + ... + 80836.

It is an arithmetic number, because the mean of its divisors is an integer number (129898804).

Almost surely, 2^2142159100 is an apocalyptic number.

2142159100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142159100 is an abundant number, since it is smaller than the sum of its proper divisors (2534197844).

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

2142159100 is a wasteful number, since it uses less digits than its factorization.

2142159100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128454 (or 128447 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2142159100 is about 46283.4646499157. The cubic root of 2142159100 is about 1289.0919836464.

The spelling of 2142159100 in words is "two billion, one hundred forty-two million, one hundred fifty-nine thousand, one hundred".