742507478 has 8 divisors (see below), whose sum is σ = 1115500680. Its totient is φ = 370673920.

The previous prime is 742507471. The next prime is 742507501. The reversal of 742507478 is 874705247.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742507471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288308 + ... + 290871.

It is an arithmetic number, because the mean of its divisors is an integer number (139437585).

Almost surely, 2^742507478 is an apocalyptic number.

742507478 is a deficient number, since it is larger than the sum of its proper divisors (372993202).

742507478 is a wasteful number, since it uses less digits than its factorization.

742507478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579822.

The product of its (nonzero) digits is 439040, while the sum is 44.

The square root of 742507478 is about 27248.9904033159. The cubic root of 742507478 is about 905.5246504603.

The spelling of 742507478 in words is "seven hundred forty-two million, five hundred seven thousand, four hundred seventy-eight".