420253331 has 4 divisors (see below), whose sum is σ = 426172464. Its totient is φ = 414334200.

The previous prime is 420253313. The next prime is 420253333. The reversal of 420253331 is 133352024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420253331 - 2¹⁰ = 420252307 is a prime.

It is a super-2 number, since 2×420253331² = 353225724433191122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420253297 and 420253306.

It is not an unprimeable number, because it can be changed into a prime (420253333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959460 + ... + 2959601.

It is an arithmetic number, because the mean of its divisors is an integer number (106543116).

Almost surely, 2^420253331 is an apocalyptic number.

420253331 is a deficient number, since it is larger than the sum of its proper divisors (5919133).

420253331 is an equidigital number, since it uses as much as digits as its factorization.

420253331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919132.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 420253331 is about 20500.0812437415. The cubic root of 420253331 is about 749.0377769934.

The spelling of 420253331 in words is "four hundred twenty million, two hundred fifty-three thousand, three hundred thirty-one".