126579047 has 4 divisors (see below), whose sum is σ = 144661776. Its totient is φ = 108496320.

The previous prime is 126579043. The next prime is 126579053. The reversal of 126579047 is 740975621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126579047 - 2² = 126579043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126578995 and 126579013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126579041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9041354 + ... + 9041367.

It is an arithmetic number, because the mean of its divisors is an integer number (36165444).

Almost surely, 2^126579047 is an apocalyptic number.

126579047 is a deficient number, since it is larger than the sum of its proper divisors (18082729).

126579047 is an equidigital number, since it uses as much as digits as its factorization.

126579047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18082728.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 126579047 is about 11250.7353981862. The cubic root of 126579047 is about 502.0965923134.

The spelling of 126579047 in words is "one hundred twenty-six million, five hundred seventy-nine thousand, forty-seven".