126722645 has 16 divisors (see below), whose sum is σ = 173976960. Its totient is φ = 86802624.

The previous prime is 126722639. The next prime is 126722693. The reversal of 126722645 is 546227621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126722645 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54119 + ... + 56411.

It is an arithmetic number, because the mean of its divisors is an integer number (10873560).

Almost surely, 2^126722645 is an apocalyptic number.

It is an amenable number.

126722645 is a deficient number, since it is larger than the sum of its proper divisors (47254315).

126722645 is a wasteful number, since it uses less digits than its factorization.

126722645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884.

The product of its digits is 40320, while the sum is 35.

The square root of 126722645 is about 11257.1153054413. The cubic root of 126722645 is about 502.2863889151.

The spelling of 126722645 in words is "one hundred twenty-six million, seven hundred twenty-two thousand, six hundred forty-five".