2129525420 has 24 divisors (see below), whose sum is σ = 4878549648. Its totient is φ = 774372800.

The previous prime is 2129525393. The next prime is 2129525443. The reversal of 2129525420 is 245259212.

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, 4839611 + ... + 4840050.

It is an arithmetic number, because the mean of its divisors is an integer number (203272902).

Almost surely, 2^2129525420 is an apocalyptic number.

2129525420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2129525420 is an abundant number, since it is smaller than the sum of its proper divisors (2749024228).

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

2129525420 is a wasteful number, since it uses less digits than its factorization.

2129525420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679681 (or 9679679 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2129525420 is about 46146.7812528675. The cubic root of 2129525420 is about 1286.5527858200.

The spelling of 2129525420 in words is "two billion, one hundred twenty-nine million, five hundred twenty-five thousand, four hundred twenty".