742336491 has 16 divisors (see below), whose sum is σ = 1067090976. Its totient is φ = 456320256.

The previous prime is 742336457. The next prime is 742336493. The reversal of 742336491 is 194633247.

It is not a de Polignac number, because 742336491 - 2¹¹ = 742334443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (742336493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27181 + ... + 47153.

It is an arithmetic number, because the mean of its divisors is an integer number (66693186).

Almost surely, 2^742336491 is an apocalyptic number.

742336491 is a deficient number, since it is larger than the sum of its proper divisors (324754485).

742336491 is a wasteful number, since it uses less digits than its factorization.

742336491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20942.

The product of its digits is 108864, while the sum is 39.

The square root of 742336491 is about 27245.8527302781. The cubic root of 742336491 is about 905.4551360852.

The spelling of 742336491 in words is "seven hundred forty-two million, three hundred thirty-six thousand, four hundred ninety-one".