138725470 has 32 divisors (see below), whose sum is σ = 269764992. Its totient is φ = 51059712.

The previous prime is 138725437. The next prime is 138725497. The reversal of 138725470 is 74527831.

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, 44379 + ... + 47401.

It is an arithmetic number, because the mean of its divisors is an integer number (8430156).

Almost surely, 2^138725470 is an apocalyptic number.

138725470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138725470 is a deficient number, since it is larger than the sum of its proper divisors (131039522).

138725470 is a wasteful number, since it uses less digits than its factorization.

138725470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 138725470 is about 11778.1777028537. The cubic root of 138725470 is about 517.6688924184.

The spelling of 138725470 in words is "one hundred thirty-eight million, seven hundred twenty-five thousand, four hundred seventy".