420344275 has 12 divisors (see below), whose sum is σ = 561321712. Its totient is φ = 310407840.

The previous prime is 420344269. The next prime is 420344291. The reversal of 420344275 is 572443024.

It is a happy number.

It is not a de Polignac number, because 420344275 - 2²³ = 411955667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 646359 + ... + 647008.

Almost surely, 2^420344275 is an apocalyptic number.

420344275 is a deficient number, since it is larger than the sum of its proper divisors (140977437).

420344275 is a wasteful number, since it uses less digits than its factorization.

420344275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293390 (or 1293385 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 420344275 is about 20502.2992613024. The cubic root of 420344275 is about 749.0918043886.

Adding to 420344275 its reverse (572443024), we get a palindrome (992787299).

The spelling of 420344275 in words is "four hundred twenty million, three hundred forty-four thousand, two hundred seventy-five".