742950921 has 8 divisors (see below), whose sum is σ = 990738784. Its totient is φ = 495231840.

The previous prime is 742950919. The next prime is 742950937. The reversal of 742950921 is 129059247.

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

It is not a de Polignac number, because 742950921 - 2¹ = 742950919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742950921.

It is not an unprimeable number, because it can be changed into a prime (742950821) 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, 18741 + ... + 42861.

It is an arithmetic number, because the mean of its divisors is an integer number (123842348).

Almost surely, 2^742950921 is an apocalyptic number.

It is an amenable number.

742950921 is a deficient number, since it is larger than the sum of its proper divisors (247787863).

742950921 is a wasteful number, since it uses less digits than its factorization.

742950921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34391.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 742950921 is about 27257.1260590694. The cubic root of 742950921 is about 905.7048814874.

The spelling of 742950921 in words is "seven hundred forty-two million, nine hundred fifty thousand, nine hundred twenty-one".