42415837 has 2 divisors, whose sum is σ = 42415838. Its totient is φ = 42415836.

The previous prime is 42415753. The next prime is 42415861. The reversal of 42415837 is 73851424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29877156 + 12538681 = 5466^2 + 3541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42415837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42415237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21207918 + 21207919.

It is an arithmetic number, because the mean of its divisors is an integer number (21207919).

Almost surely, 2^42415837 is an apocalyptic number.

It is an amenable number.

42415837 is a deficient number, since it is larger than the sum of its proper divisors (1).

42415837 is an equidigital number, since it uses as much as digits as its factorization.

42415837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 42415837 is about 6512.7441988765. The cubic root of 42415837 is about 348.7460899773.

It can be divided in two parts, 424 and 15837, that added together give a palindrome (16261).

The spelling of 42415837 in words is "forty-two million, four hundred fifteen thousand, eight hundred thirty-seven".