125919959542 has 12 divisors (see below), whose sum is σ = 204526798740. Its totient is φ = 58116904248.

The previous prime is 125919959533. The next prime is 125919959603. The reversal of 125919959542 is 245959919521.

It is a super-2 number, since 2×125919959542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186271792 + ... + 186272467.

It is an arithmetic number, because the mean of its divisors is an integer number (17043899895).

Almost surely, 2^125919959542 is an apocalyptic number.

125919959542 is a deficient number, since it is larger than the sum of its proper divisors (78606839198).

125919959542 is a wasteful number, since it uses less digits than its factorization.

125919959542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372544287 (or 372544274 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 61.

The spelling of 125919959542 in words is "one hundred twenty-five billion, nine hundred nineteen million, nine hundred fifty-nine thousand, five hundred forty-two".