126422721 has 16 divisors (see below), whose sum is σ = 191862720. Its totient is φ = 82225440.

The previous prime is 126422711. The next prime is 126422731. The reversal of 126422721 is 127224621.

126422721 is a `hidden beast` number, since 12 + 642 + 2 + 7 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (126422711) and next prime (126422731).

It is not a de Polignac number, because 126422721 - 2⁵ = 126422689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (126422701) 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, 55995 + ... + 58208.

It is an arithmetic number, because the mean of its divisors is an integer number (11991420).

Almost surely, 2^126422721 is an apocalyptic number.

It is an amenable number.

126422721 is a deficient number, since it is larger than the sum of its proper divisors (65439999).

126422721 is a wasteful number, since it uses less digits than its factorization.

126422721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114253 (or 114247 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 126422721 is about 11243.7858837671. The cubic root of 126422721 is about 501.8898095739.

The spelling of 126422721 in words is "one hundred twenty-six million, four hundred twenty-two thousand, seven hundred twenty-one".