742539 has 16 divisors (see below), whose sum is σ = 1191680. Its totient is φ = 401760.

The previous prime is 742537. The next prime is 742541. The reversal of 742539 is 935247.

742539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (742537) and next prime (742541).

It is not a de Polignac number, because 742539 - 2¹ = 742537 is a prime.

Its product of digits (7560) is a multiple of the sum of its prime divisors (1890).

It is not an unprimeable number, because it can be changed into a prime (742531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532 + ... + 1329.

It is an arithmetic number, because the mean of its divisors is an integer number (74480).

2⁷⁴²⁵³⁹ is an apocalyptic number.

742539 is a deficient number, since it is larger than the sum of its proper divisors (449141).

742539 is a wasteful number, since it uses less digits than its factorization.

742539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its digits is 7560, while the sum is 30.

The square root of 742539 is about 861.7070267788. The cubic root of 742539 is about 90.5537464492.

The spelling of 742539 in words is "seven hundred forty-two thousand, five hundred thirty-nine".