138501235 has 8 divisors (see below), whose sum is σ = 166269456. Its totient is φ = 110755680.

The previous prime is 138501229. The next prime is 138501257. The reversal of 138501235 is 532105831.

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

It is a de Polignac number, because none of the positive numbers 2^k-138501235 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13977 + ... + 21733.

It is an arithmetic number, because the mean of its divisors is an integer number (20783682).

Almost surely, 2^138501235 is an apocalyptic number.

138501235 is a deficient number, since it is larger than the sum of its proper divisors (27768221).

138501235 is an equidigital number, since it uses as much as digits as its factorization.

138501235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11333.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 138501235 is about 11768.6547659450. The cubic root of 138501235 is about 517.3898230600.

The spelling of 138501235 in words is "one hundred thirty-eight million, five hundred one thousand, two hundred thirty-five".