2142122404 has 12 divisors (see below), whose sum is σ = 3753423324. Its totient is φ = 1069715744.

The previous prime is 2142122387. The next prime is 2142122407. The reversal of 2142122404 is 4042212412.

It can be written as a sum of positive squares in 2 ways, for example, as 1711476900 + 430645504 = 41370^2 + 20752^2 .

It is not an unprimeable number, because it can be changed into a prime (2142122407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332779 + ... + 339154.

It is an arithmetic number, because the mean of its divisors is an integer number (312785277).

Almost surely, 2^2142122404 is an apocalyptic number.

It is an amenable number.

2142122404 is a deficient number, since it is larger than the sum of its proper divisors (1611300920).

2142122404 is a wasteful number, since it uses less digits than its factorization.

2142122404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672734 (or 672732 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2142122404 is about 46283.0682215430. The cubic root of 2142122404 is about 1289.0846227258.

Adding to 2142122404 its reverse (4042212412), we get a palindrome (6184334816).

The spelling of 2142122404 in words is "two billion, one hundred forty-two million, one hundred twenty-two thousand, four hundred four".