126639984 has 40 divisors (see below), whose sum is σ = 338438160. Its totient is φ = 40757248.

The previous prime is 126639973. The next prime is 126640009. The reversal of 126639984 is 489936621.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44097 + ... + 46880.

It is an arithmetic number, because the mean of its divisors is an integer number (8460954).

Almost surely, 2^126639984 is an apocalyptic number.

It is an amenable number.

126639984 is an abundant number, since it is smaller than the sum of its proper divisors (211798176).

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

126639984 is a wasteful number, since it uses less digits than its factorization.

126639984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91017 (or 91011 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 126639984 is about 11253.4432064146. The cubic root of 126639984 is about 502.1771515956.

The spelling of 126639984 in words is "one hundred twenty-six million, six hundred thirty-nine thousand, nine hundred eighty-four".