420413837 has 2 divisors, whose sum is σ = 420413838. Its totient is φ = 420413836.

The previous prime is 420413827. The next prime is 420413857. The reversal of 420413837 is 738314024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215179561 + 205234276 = 14669^2 + 14326^2 .

It is a cyclic number.

It is not a de Polignac number, because 420413837 - 2²² = 416219533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420413827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210206918 + 210206919.

It is an arithmetic number, because the mean of its divisors is an integer number (210206919).

Almost surely, 2^420413837 is an apocalyptic number.

It is an amenable number.

420413837 is a deficient number, since it is larger than the sum of its proper divisors (1).

420413837 is an equidigital number, since it uses as much as digits as its factorization.

420413837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 420413837 is about 20503.9956349976. The cubic root of 420413837 is about 749.1331240504.

The spelling of 420413837 in words is "four hundred twenty million, four hundred thirteen thousand, eight hundred thirty-seven".