742511 has 8 divisors (see below), whose sum is σ = 925824. Its totient is φ = 578520.

The previous prime is 742507. The next prime is 742513. The reversal of 742511 is 115247.

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 742511 - 2² = 742507 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 (742513) 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, 4745 + ... + 4898.

It is an arithmetic number, because the mean of its divisors is an integer number (115728).

2⁷⁴²⁵¹¹ is an apocalyptic number.

742511 is a deficient number, since it is larger than the sum of its proper divisors (183313).

742511 is a wasteful number, since it uses less digits than its factorization.

742511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661.

The product of its digits is 280, while the sum is 20.

The square root of 742511 is about 861.6907798044. The cubic root of 742511 is about 90.5526082209.

Adding to 742511 its reverse (115247), we get a palindrome (857758).

Subtracting from 742511 its reverse (115247), we obtain a square (627264 = 792²).

The spelling of 742511 in words is "seven hundred forty-two thousand, five hundred eleven".