42516437 has 2 divisors, whose sum is σ = 42516438. Its totient is φ = 42516436.

The previous prime is 42516413. The next prime is 42516449. The reversal of 42516437 is 73461524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 707281 = 6466^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 42516437 - 2⁶ = 42516373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42516037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21258218 + 21258219.

It is an arithmetic number, because the mean of its divisors is an integer number (21258219).

Almost surely, 2^42516437 is an apocalyptic number.

It is an amenable number.

42516437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42516437 is an equidigital number, since it uses as much as digits as its factorization.

42516437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 42516437 is about 6520.4629436874. The cubic root of 42516437 is about 349.0215857892.

The spelling of 42516437 in words is "forty-two million, five hundred sixteen thousand, four hundred thirty-seven".