139434372 has 240 divisors, whose sum is σ = 476163072. Its totient is φ = 34642080.

The previous prime is 139434343. The next prime is 139434397. The reversal of 139434372 is 273434931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (54432) is a multiple of the sum of its prime factors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6062353 + ... + 6062375.

Almost surely, 2^139434372 is an apocalyptic number.

139434372 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 139434372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238081536).

139434372 is an abundant number, since it is smaller than the sum of its proper divisors (336728700).

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

139434372 is an equidigital number, since it uses as much as digits as its factorization.

139434372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 46 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 139434372 is about 11808.2332294040. The cubic root of 139434372 is about 518.5491758188.

The spelling of 139434372 in words is "one hundred thirty-nine million, four hundred thirty-four thousand, three hundred seventy-two".