742707247 has 2 divisors, whose sum is σ = 742707248. Its totient is φ = 742707246.

The previous prime is 742707239. The next prime is 742707263.

It is a happy number.

742707247 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 742707247 - 2³ = 742707239 is a prime.

It is a super-2 number, since 2×742707247² = 1103228109492638018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742707347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371353623 + 371353624.

It is an arithmetic number, because the mean of its divisors is an integer number (371353624).

Almost surely, 2^742707247 is an apocalyptic number.

742707247 is a deficient number, since it is larger than the sum of its proper divisors (1).

742707247 is an equidigital number, since it uses as much as digits as its factorization.

742707247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153664, while the sum is 40.

The square root of 742707247 is about 27252.6557788411. The cubic root of 742707247 is about 905.6058525755.

The spelling of 742707247 in words is "seven hundred forty-two million, seven hundred seven thousand, two hundred forty-seven".