742241506 has 4 divisors (see below), whose sum is σ = 1113362262. Its totient is φ = 371120752.

The previous prime is 742241503. The next prime is 742241561. The reversal of 742241506 is 605142247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 715295025 + 26946481 = 26745^2 + 5191^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (742241503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185560375 + ... + 185560378.

Almost surely, 2^742241506 is an apocalyptic number.

742241506 is a deficient number, since it is larger than the sum of its proper divisors (371120756).

742241506 is a wasteful number, since it uses less digits than its factorization.

742241506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371120755.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 742241506 is about 27244.1095651886. The cubic root of 742241506 is about 905.4165155380.

The spelling of 742241506 in words is "seven hundred forty-two million, two hundred forty-one thousand, five hundred six".