420501213 has 20 divisors (see below), whose sum is σ = 685262688. Its totient is φ = 254848680.

The previous prime is 420501199. The next prime is 420501227. The reversal of 420501213 is 312105024.

It is an interprime number because it is at equal distance from previous prime (420501199) and next prime (420501227).

It is not a de Polignac number, because 420501213 - 2⁶ = 420501149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420501233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 235081 + ... + 236862.

Almost surely, 2^420501213 is an apocalyptic number.

It is an amenable number.

420501213 is a deficient number, since it is larger than the sum of its proper divisors (264761475).

420501213 is a wasteful number, since it uses less digits than its factorization.

420501213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471966 (or 471957 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 420501213 is about 20506.1262309584. The cubic root of 420501213 is about 749.1850187281.

Adding to 420501213 its reverse (312105024), we get a palindrome (732606237).

The spelling of 420501213 in words is "four hundred twenty million, five hundred one thousand, two hundred thirteen".