420464237 has 2 divisors, whose sum is σ = 420464238. Its totient is φ = 420464236.

The previous prime is 420464197. The next prime is 420464293. The reversal of 420464237 is 732464024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418652521 + 1811716 = 20461^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 420464237 - 2¹⁰ = 420463213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420464537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210232118 + 210232119.

It is an arithmetic number, because the mean of its divisors is an integer number (210232119).

Almost surely, 2^420464237 is an apocalyptic number.

It is an amenable number.

420464237 is a deficient number, since it is larger than the sum of its proper divisors (1).

420464237 is an equidigital number, since it uses as much as digits as its factorization.

420464237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 420464237 is about 20505.2246269091. The cubic root of 420464237 is about 749.1630586827.

The spelling of 420464237 in words is "four hundred twenty million, four hundred sixty-four thousand, two hundred thirty-seven".