134439972 has 48 divisors (see below), whose sum is σ = 331161600. Its totient is φ = 42331680.

The previous prime is 134439967. The next prime is 134439979. The reversal of 134439972 is 279934431.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (134439979) 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, 108597 + ... + 109827.

It is an arithmetic number, because the mean of its divisors is an integer number (6899200).

Almost surely, 2^134439972 is an apocalyptic number.

134439972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134439972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165580800).

134439972 is an abundant number, since it is smaller than the sum of its proper divisors (196721628).

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

134439972 is a wasteful number, since it uses less digits than its factorization.

134439972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1734 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 134439972 is about 11594.8252250735. The cubic root of 134439972 is about 512.2824420234.

The spelling of 134439972 in words is "one hundred thirty-four million, four hundred thirty-nine thousand, nine hundred seventy-two".