742646247 has 16 divisors (see below), whose sum is σ = 1139251200. Its totient is φ = 421519392.

The previous prime is 742646227. The next prime is 742646251.

It is a happy number.

742646247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 742646247 - 2¹⁴ = 742629863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 742646199 and 742646208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742646227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115543 + ... + 121800.

It is an arithmetic number, because the mean of its divisors is an integer number (71203200).

Almost surely, 2^742646247 is an apocalyptic number.

742646247 is a deficient number, since it is larger than the sum of its proper divisors (396604953).

742646247 is a wasteful number, since it uses less digits than its factorization.

742646247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237502.

The product of its digits is 451584, while the sum is 42.

The square root of 742646247 is about 27251.5365988782. The cubic root of 742646247 is about 905.5810588362.

The spelling of 742646247 in words is "seven hundred forty-two million, six hundred forty-six thousand, two hundred forty-seven".