138752029 has 8 divisors (see below), whose sum is σ = 150262560. Its totient is φ = 127361136.

The previous prime is 138752017. The next prime is 138752051. The reversal of 138752029 is 920257831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138752029 - 2⁵ = 138751997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27487 + ... + 32140.

It is an arithmetic number, because the mean of its divisors is an integer number (18782820).

Almost surely, 2^138752029 is an apocalyptic number.

It is an amenable number.

138752029 is a deficient number, since it is larger than the sum of its proper divisors (11510531).

138752029 is a wasteful number, since it uses less digits than its factorization.

138752029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59819.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 138752029 is about 11779.3051153283. The cubic root of 138752029 is about 517.7019262244.

The spelling of 138752029 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, twenty-nine".