42402037 has 12 divisors (see below), whose sum is σ = 44573760. Its totient is φ = 40316976.

The previous prime is 42402023. The next prime is 42402043. The reversal of 42402037 is 73020424.

It is a de Polignac number, because none of the positive numbers 2^k-42402037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42401999 and 42402017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42403037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64014 + ... + 64672.

It is an arithmetic number, because the mean of its divisors is an integer number (3714480).

Almost surely, 2^42402037 is an apocalyptic number.

42402037 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42402037 is a deficient number, since it is larger than the sum of its proper divisors (2171723).

42402037 is an equidigital number, since it uses as much as digits as its factorization.

42402037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42402037 is about 6511.6846514554. The cubic root of 42402037 is about 348.7082643410.

The spelling of 42402037 in words is "forty-two million, four hundred two thousand, thirty-seven".