142646344 has 8 divisors (see below), whose sum is σ = 267461910. Its totient is φ = 71323168.

The previous prime is 142646327. The next prime is 142646377. The reversal of 142646344 is 443646241.

It can be written as a sum of positive squares in only one way, i.e., 127916100 + 14730244 = 11310^2 + 3838^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8915389 + ... + 8915404.

Almost surely, 2^142646344 is an apocalyptic number.

It is an amenable number.

142646344 is a deficient number, since it is larger than the sum of its proper divisors (124815566).

142646344 is a wasteful number, since it uses less digits than its factorization.

142646344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830799 (or 17830795 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 142646344 is about 11943.4644889998. The cubic root of 142646344 is about 522.5007061795.

The spelling of 142646344 in words is "one hundred forty-two million, six hundred forty-six thousand, three hundred forty-four".