126979842 has 32 divisors (see below), whose sum is σ = 279751680. Its totient is φ = 38103120.

The previous prime is 126979837. The next prime is 126979843. The reversal of 126979842 is 248979621.

It is a super-2 number, since 2×126979842² = 32247760548689928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126979791 and 126979800.

It is not an unprimeable number, because it can be changed into a prime (126979843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542 + ... + 16137.

It is an arithmetic number, because the mean of its divisors is an integer number (8742240).

Almost surely, 2^126979842 is an apocalyptic number.

126979842 is an abundant number, since it is smaller than the sum of its proper divisors (152771838).

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

126979842 is a wasteful number, since it uses less digits than its factorization.

126979842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798.

The product of its digits is 435456, while the sum is 48.

The square root of 126979842 is about 11268.5332674665. The cubic root of 126979842 is about 502.6259737134.

The spelling of 126979842 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, eight hundred forty-two".