752139 has 16 divisors (see below), whose sum is σ = 1130400. Its totient is φ = 494208.

The previous prime is 752137. The next prime is 752149. The reversal of 752139 is 931257.

It is not a de Polignac number, because 752139 - 2¹ = 752137 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

752139 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (752137) 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 15 ways as a sum of consecutive naturals, for example, 2247 + ... + 2559.

It is an arithmetic number, because the mean of its divisors is an integer number (70650).

2⁷⁵²¹³⁹ is an apocalyptic number.

752139 is a deficient number, since it is larger than the sum of its proper divisors (378261).

752139 is a wasteful number, since it uses less digits than its factorization.

752139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 405 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 752139 is about 867.2594767427. The cubic root of 752139 is about 90.9423214576.

The spelling of 752139 in words is "seven hundred fifty-two thousand, one hundred thirty-nine".