126504978 has 32 divisors (see below), whose sum is σ = 258773184. Its totient is φ = 41217792.

The previous prime is 126504953. The next prime is 126504979. The reversal of 126504978 is 879405621.

It is not an unprimeable number, because it can be changed into a prime (126504979) 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, 53926 + ... + 56222.

It is an arithmetic number, because the mean of its divisors is an integer number (8086662).

Almost surely, 2^126504978 is an apocalyptic number.

126504978 is an abundant number, since it is smaller than the sum of its proper divisors (132268206).

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

126504978 is a wasteful number, since it uses less digits than its factorization.

126504978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 126504978 is about 11247.4431761179. The cubic root of 126504978 is about 501.9986375841.

The spelling of 126504978 in words is "one hundred twenty-six million, five hundred four thousand, nine hundred seventy-eight".