742572169 has 2 divisors, whose sum is σ = 742572170. Its totient is φ = 742572168.

The previous prime is 742572167. The next prime is 742572211. The reversal of 742572169 is 961275247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729648144 + 12924025 = 27012^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 742572169 - 2¹ = 742572167 is a prime.

It is a super-2 number, since 2×742572169² = 1102826852346729122, which contains 22 as substring.

Together with 742572167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (742572167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371286084 + 371286085.

It is an arithmetic number, because the mean of its divisors is an integer number (371286085).

Almost surely, 2^742572169 is an apocalyptic number.

It is an amenable number.

742572169 is a deficient number, since it is larger than the sum of its proper divisors (1).

742572169 is an equidigital number, since it uses as much as digits as its factorization.

742572169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 742572169 is about 27250.1774122665. The cubic root of 742572169 is about 905.5509476563.

The spelling of 742572169 in words is "seven hundred forty-two million, five hundred seventy-two thousand, one hundred sixty-nine".