742443923 has 8 divisors (see below), whose sum is σ = 801975216. Its totient is φ = 683258400.

The previous prime is 742443901. The next prime is 742443929. The reversal of 742443923 is 329344247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742443923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742443929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81968 + ... + 90573.

It is an arithmetic number, because the mean of its divisors is an integer number (100246902).

Almost surely, 2^742443923 is an apocalyptic number.

742443923 is a deficient number, since it is larger than the sum of its proper divisors (59531293).

742443923 is a wasteful number, since it uses less digits than its factorization.

742443923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172885.

The product of its digits is 145152, while the sum is 38.

The square root of 742443923 is about 27247.8241883641. The cubic root of 742443923 is about 905.4988135662.

The spelling of 742443923 in words is "seven hundred forty-two million, four hundred forty-three thousand, nine hundred twenty-three".