2131421204 has 24 divisors (see below), whose sum is σ = 4081179648. Its totient is φ = 965946240.

The previous prime is 2131421179. The next prime is 2131421239. The reversal of 2131421204 is 4021241312.

It is a congruent number.

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, 57044 + ... + 86699.

It is an arithmetic number, because the mean of its divisors is an integer number (170049152).

Almost surely, 2^2131421204 is an apocalyptic number.

It is an amenable number.

2131421204 is a deficient number, since it is larger than the sum of its proper divisors (1949758444).

2131421204 is a wasteful number, since it uses less digits than its factorization.

2131421204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144095 (or 144093 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2131421204 is about 46167.3174875907. The cubic root of 2131421204 is about 1286.9344518867.

Adding to 2131421204 its reverse (4021241312), we get a palindrome (6152662516).

The spelling of 2131421204 in words is "two billion, one hundred thirty-one million, four hundred twenty-one thousand, two hundred four".