126621884 has 6 divisors (see below), whose sum is σ = 221588304. Its totient is φ = 63310940.

The previous prime is 126621883. The next prime is 126621919. The reversal of 126621884 is 488126621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126621883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15827732 + ... + 15827739.

It is an arithmetic number, because the mean of its divisors is an integer number (36931384).

Almost surely, 2^126621884 is an apocalyptic number.

It is an amenable number.

126621884 is a deficient number, since it is larger than the sum of its proper divisors (94966420).

126621884 is a wasteful number, since it uses less digits than its factorization.

126621884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31655475 (or 31655473 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 126621884 is about 11252.6389793684. The cubic root of 126621884 is about 502.1532259253.

The spelling of 126621884 in words is "one hundred twenty-six million, six hundred twenty-one thousand, eight hundred eighty-four".