42734569 has 2 divisors, whose sum is σ = 42734570. Its totient is φ = 42734568.

The previous prime is 42734567. The next prime is 42734599. The reversal of 42734569 is 96543724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 1299600 = 6437^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 42734569 - 2¹ = 42734567 is a prime.

It is a super-2 number, since 2×42734569² = 3652486775231522, which contains 22 as substring.

Together with 42734567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42734563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21367284 + 21367285.

It is an arithmetic number, because the mean of its divisors is an integer number (21367285).

Almost surely, 2^42734569 is an apocalyptic number.

It is an amenable number.

42734569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42734569 is an equidigital number, since it uses as much as digits as its factorization.

42734569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 42734569 is about 6537.1682707423. The cubic root of 42734569 is about 349.6174568701.

The spelling of 42734569 in words is "forty-two million, seven hundred thirty-four thousand, five hundred sixty-nine".