126979047 has 24 divisors (see below), whose sum is σ = 200242224. Its totient is φ = 77065344.

The previous prime is 126979037. The next prime is 126979049. The reversal of 126979047 is 740979621.

It is not a de Polignac number, because 126979047 - 2⁴ = 126979031 is a prime.

It is a super-2 number, since 2×126979047² = 32247356754056418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126978993 and 126979011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126979049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1108 + ... + 15974.

It is an arithmetic number, because the mean of its divisors is an integer number (8343426).

Almost surely, 2^126979047 is an apocalyptic number.

126979047 is a deficient number, since it is larger than the sum of its proper divisors (73263177).

126979047 is a wasteful number, since it uses less digits than its factorization.

126979047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14959 (or 14956 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 126979047 is about 11268.4979921904. The cubic root of 126979047 is about 502.6249247582.

The spelling of 126979047 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, forty-seven".