126489984 has 32 divisors (see below), whose sum is σ = 335990040. Its totient is φ = 42163200.

The previous prime is 126489983. The next prime is 126489991. The reversal of 126489984 is 489984621.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126489983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164317 + ... + 165084.

Almost surely, 2^126489984 is an apocalyptic number.

It is an amenable number.

126489984 is an abundant number, since it is smaller than the sum of its proper divisors (209500056).

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

126489984 is an equidigital number, since it uses as much as digits as its factorization.

126489984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329418 (or 329406 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 126489984 is about 11246.7766048766. The cubic root of 126489984 is about 501.9788036743.

The spelling of 126489984 in words is "one hundred twenty-six million, four hundred eighty-nine thousand, nine hundred eighty-four".