42515437 has 2 divisors, whose sum is σ = 42515438. Its totient is φ = 42515436.

The previous prime is 42515411. The next prime is 42515441. The reversal of 42515437 is 73451524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37197801 + 5317636 = 6099^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 42515437 - 2⁷ = 42515309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42515399 and 42515408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42516437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21257718 + 21257719.

It is an arithmetic number, because the mean of its divisors is an integer number (21257719).

Almost surely, 2^42515437 is an apocalyptic number.

It is an amenable number.

42515437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42515437 is an equidigital number, since it uses as much as digits as its factorization.

42515437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 42515437 is about 6520.3862615646. The cubic root of 42515437 is about 349.0188494019.

The spelling of 42515437 in words is "forty-two million, five hundred fifteen thousand, four hundred thirty-seven".