742868247 has 12 divisors (see below), whose sum is σ = 1088722040. Its totient is φ = 450222960.

The previous prime is 742868183. The next prime is 742868249.

It is a happy number.

742868247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 742868247 - 2⁶ = 742868183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742868196 and 742868205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742868249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1022872 + ... + 1023597.

Almost surely, 2^742868247 is an apocalyptic number.

742868247 is a deficient number, since it is larger than the sum of its proper divisors (345853793).

742868247 is a wasteful number, since it uses less digits than its factorization.

742868247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046494 (or 2046483 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 742868247 is about 27255.6094593388. The cubic root of 742868247 is about 905.6712852695.

The spelling of 742868247 in words is "seven hundred forty-two million, eight hundred sixty-eight thousand, two hundred forty-seven".