42946837 has 2 divisors, whose sum is σ = 42946838. Its totient is φ = 42946836.

The previous prime is 42946831. The next prime is 42946877. The reversal of 42946837 is 73864924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42850116 + 96721 = 6546^2 + 311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42946837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42946793 and 42946802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42946831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21473418 + 21473419.

It is an arithmetic number, because the mean of its divisors is an integer number (21473419).

Almost surely, 2^42946837 is an apocalyptic number.

It is an amenable number.

42946837 is a deficient number, since it is larger than the sum of its proper divisors (1).

42946837 is an equidigital number, since it uses as much as digits as its factorization.

42946837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 42946837 is about 6553.3836298511. The cubic root of 42946837 is about 350.1953657588.

The spelling of 42946837 in words is "forty-two million, nine hundred forty-six thousand, eight hundred thirty-seven".