142634440456 has 8 divisors (see below), whose sum is σ = 267439575870. Its totient is φ = 71317220224.

The previous prime is 142634440439. The next prime is 142634440489. The reversal of 142634440456 is 654044436241.

It can be written as a sum of positive squares in only one way, i.e., 128457728100 + 14176712356 = 358410^2 + 119066^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8914652521 + ... + 8914652536.

Almost surely, 2^142634440456 is an apocalyptic number.

It is an amenable number.

142634440456 is a deficient number, since it is larger than the sum of its proper divisors (124805135414).

142634440456 is a wasteful number, since it uses less digits than its factorization.

142634440456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17829305063 (or 17829305059 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

Adding to 142634440456 its reverse (654044436241), we get a palindrome (796678876697).

The spelling of 142634440456 in words is "one hundred forty-two billion, six hundred thirty-four million, four hundred forty thousand, four hundred fifty-six".