742506757 has 8 divisors (see below), whose sum is σ = 799763360. Its totient is φ = 687067920.

The previous prime is 742506731. The next prime is 742506763. The reversal of 742506757 is 757605247.

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 742506757 - 2¹⁹ = 741982469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742500757) 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, 453594 + ... + 455227.

It is an arithmetic number, because the mean of its divisors is an integer number (99970420).

Almost surely, 2^742506757 is an apocalyptic number.

It is an amenable number.

742506757 is a deficient number, since it is larger than the sum of its proper divisors (57256603).

742506757 is a wasteful number, since it uses less digits than its factorization.

742506757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908883.

The product of its (nonzero) digits is 411600, while the sum is 43.

The square root of 742506757 is about 27248.9771734647. The cubic root of 742506757 is about 905.5243573618.

The spelling of 742506757 in words is "seven hundred forty-two million, five hundred six thousand, seven hundred fifty-seven".