126515042442 has 24 divisors (see below), whose sum is σ = 274136512260. Its totient is φ = 42168513600.

The previous prime is 126515042419. The next prime is 126515042447. The reversal of 126515042442 is 244240515621.

126515042442 is a `hidden beast` number, since 1 + 2 + 65 + 150 + 4 + 2 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 115403563521 + 11111478921 = 339711^2 + 105411^2 .

It is a super-2 number, since 2×126515042442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126515042397 and 126515042406.

It is not an unprimeable number, because it can be changed into a prime (126515042447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11059 + ... + 503142.

Almost surely, 2^126515042442 is an apocalyptic number.

126515042442 is an abundant number, since it is smaller than the sum of its proper divisors (147621469818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126515042442 is a wasteful number, since it uses less digits than its factorization.

126515042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527878 (or 527875 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 126515042442 in words is "one hundred twenty-six billion, five hundred fifteen million, forty-two thousand, four hundred forty-two".