2142369128 has 8 divisors (see below), whose sum is σ = 4016942130. Its totient is φ = 1071184560.

The previous prime is 2142369101. The next prime is 2142369133. The reversal of 2142369128 is 8219632412.

It can be written as a sum of positive squares in only one way, i.e., 1930899364 + 211469764 = 43942^2 + 14542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2142369091 and 2142369100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133898063 + ... + 133898078.

Almost surely, 2^2142369128 is an apocalyptic number.

It is an amenable number.

2142369128 is a deficient number, since it is larger than the sum of its proper divisors (1874573002).

2142369128 is a wasteful number, since it uses less digits than its factorization.

2142369128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267796147 (or 267796143 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 2142369128 is about 46285.7335255692. The cubic root of 2142369128 is about 1289.1341119464.

The spelling of 2142369128 in words is "two billion, one hundred forty-two million, three hundred sixty-nine thousand, one hundred twenty-eight".