139725430 has 32 divisors (see below), whose sum is σ = 285112800. Its totient is φ = 48874752.

The previous prime is 139725419. The next prime is 139725479. The reversal of 139725430 is 34527931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25815 + ... + 30754.

It is an arithmetic number, because the mean of its divisors is an integer number (8909775).

Almost surely, 2^139725430 is an apocalyptic number.

139725430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139725430 is an abundant number, since it is smaller than the sum of its proper divisors (145387370).

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

139725430 is a wasteful number, since it uses less digits than its factorization.

139725430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56608.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 139725430 is about 11820.5511715825. The cubic root of 139725430 is about 518.9097349092.

The spelling of 139725430 in words is "one hundred thirty-nine million, seven hundred twenty-five thousand, four hundred thirty".