126979442 has 8 divisors (see below), whose sum is σ = 190673136. Its totient is φ = 63421732.

The previous prime is 126979427. The next prime is 126979469. The reversal of 126979442 is 244979621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×126979442² = 32247557381262728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126979393 and 126979402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31628 + ... + 35415.

It is an arithmetic number, because the mean of its divisors is an integer number (23834142).

Almost surely, 2^126979442 is an apocalyptic number.

126979442 is a deficient number, since it is larger than the sum of its proper divisors (63693694).

126979442 is an equidigital number, since it uses as much as digits as its factorization.

126979442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67992.

The product of its digits is 217728, while the sum is 44.

The square root of 126979442 is about 11268.5155189137. The cubic root of 126979442 is about 502.6254459378.

The spelling of 126979442 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, four hundred forty-two".