138750259 has 8 divisors (see below), whose sum is σ = 144510048. Its totient is φ = 133096320.

The previous prime is 138750257. The next prime is 138750263. The reversal of 138750259 is 952057831.

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 138750259 - 2¹ = 138750257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138750257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23782 + ... + 29035.

It is an arithmetic number, because the mean of its divisors is an integer number (18063756).

Almost surely, 2^138750259 is an apocalyptic number.

138750259 is a deficient number, since it is larger than the sum of its proper divisors (5759789).

138750259 is an equidigital number, since it uses as much as digits as its factorization.

138750259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52925.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 138750259 is about 11779.2299833223. The cubic root of 138750259 is about 517.6997248481.

The spelling of 138750259 in words is "one hundred thirty-eight million, seven hundred fifty thousand, two hundred fifty-nine".