126549942 has 16 divisors (see below), whose sum is σ = 256304640. Its totient is φ = 41649192.

The previous prime is 126549931. The next prime is 126549947. The reversal of 126549942 is 249945621.

It is a junction number, because it is equal to n+sod(n) for n = 126549894 and 126549903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126549947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133018 + ... + 133965.

It is an arithmetic number, because the mean of its divisors is an integer number (16019040).

Almost surely, 2^126549942 is an apocalyptic number.

126549942 is an abundant number, since it is smaller than the sum of its proper divisors (129754698).

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

126549942 is a wasteful number, since it uses less digits than its factorization.

126549942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267067.

The product of its digits is 155520, while the sum is 42.

The square root of 126549942 is about 11249.4418528210. The cubic root of 126549942 is about 502.0581061082.

The spelling of 126549942 in words is "one hundred twenty-six million, five hundred forty-nine thousand, nine hundred forty-two".