126521974 has 16 divisors (see below), whose sum is σ = 196283520. Its totient is φ = 61102080.

The previous prime is 126521951. The next prime is 126521977. The reversal of 126521974 is 479125621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126521977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36342 + ... + 39670.

It is an arithmetic number, because the mean of its divisors is an integer number (12267720).

Almost surely, 2^126521974 is an apocalyptic number.

126521974 is a deficient number, since it is larger than the sum of its proper divisors (69761546).

126521974 is a wasteful number, since it uses less digits than its factorization.

126521974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975.

The product of its digits is 30240, while the sum is 37.

The square root of 126521974 is about 11248.1987002364. The cubic root of 126521974 is about 502.0211178240.

The spelling of 126521974 in words is "one hundred twenty-six million, five hundred twenty-one thousand, nine hundred seventy-four".