742942921 has 8 divisors (see below), whose sum is σ = 893766080. Its totient is φ = 603291888.

The previous prime is 742942913. The next prime is 742942951. The reversal of 742942921 is 129249247.

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 742942921 - 2³ = 742942913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742942951) 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, 2792886 + ... + 2793151.

It is an arithmetic number, because the mean of its divisors is an integer number (111720760).

Almost surely, 2^742942921 is an apocalyptic number.

It is an amenable number.

742942921 is a deficient number, since it is larger than the sum of its proper divisors (150823159).

742942921 is a wasteful number, since it uses less digits than its factorization.

742942921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586063.

The product of its digits is 72576, while the sum is 40.

The square root of 742942921 is about 27256.9793080598. The cubic root of 742942921 is about 905.7016306378.

The spelling of 742942921 in words is "seven hundred forty-two million, nine hundred forty-two thousand, nine hundred twenty-one".