742945 has 8 divisors (see below), whose sum is σ = 1018944. Its totient is φ = 509424.

The previous prime is 742943. The next prime is 742949. The reversal of 742945 is 549247.

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 742945 - 2¹ = 742943 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742943) 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, 10579 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (127368).

2⁷⁴²⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

742945 is a deficient number, since it is larger than the sum of its proper divisors (275999).

742945 is a wasteful number, since it uses less digits than its factorization.

742945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21239.

The product of its digits is 10080, while the sum is 31.

The square root of 742945 is about 861.9425734932. The cubic root of 742945 is about 90.5702475455.

The spelling of 742945 in words is "seven hundred forty-two thousand, nine hundred forty-five".