42436769 has 2 divisors, whose sum is σ = 42436770. Its totient is φ = 42436768.

The previous prime is 42436759. The next prime is 42436787. The reversal of 42436769 is 96763424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42406144 + 30625 = 6512^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 42436769 - 2²⁴ = 25659553 is a prime.

It is a super-2 number, since 2×42436769² = 3601758726318722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42436759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218384 + 21218385.

It is an arithmetic number, because the mean of its divisors is an integer number (21218385).

Almost surely, 2^42436769 is an apocalyptic number.

It is an amenable number.

42436769 is a deficient number, since it is larger than the sum of its proper divisors (1).

42436769 is an equidigital number, since it uses as much as digits as its factorization.

42436769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 42436769 is about 6514.3510037455. The cubic root of 42436769 is about 348.8034486839.

The spelling of 42436769 in words is "forty-two million, four hundred thirty-six thousand, seven hundred sixty-nine".