126250137506 has 8 divisors (see below), whose sum is σ = 189972605340. Its totient is φ = 62925935728.

The previous prime is 126250137479. The next prime is 126250137529. The reversal of 126250137506 is 605731052621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 125605739281 + 644398225 = 354409^2 + 25385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 126250137506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99565721 + ... + 99566988.

Almost surely, 2^126250137506 is an apocalyptic number.

126250137506 is a deficient number, since it is larger than the sum of its proper divisors (63722467834).

126250137506 is a wasteful number, since it uses less digits than its factorization.

126250137506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199133028.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 126250137506 in words is "one hundred twenty-six billion, two hundred fifty million, one hundred thirty-seven thousand, five hundred six".