420252371 has 18 divisors (see below), whose sum is σ = 533911932. Its totient is φ = 327098520.

The previous prime is 420252361. The next prime is 420252377. The reversal of 420252371 is 173252024.

It is not a de Polignac number, because 420252371 - 2⁶ = 420252307 is a prime.

It is a super-2 number, since 2×420252371² = 353224110662243282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420252371.

It is not an unprimeable number, because it can be changed into a prime (420252377) 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 17 ways as a sum of consecutive naturals, for example, 475496 + ... + 476378.

It is an arithmetic number, because the mean of its divisors is an integer number (29661774).

Almost surely, 2^420252371 is an apocalyptic number.

420252371 is a deficient number, since it is larger than the sum of its proper divisors (113659561).

420252371 is an frugal number, since it uses more digits than its factorization.

420252371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 420252371 is about 20500.0578291867. The cubic root of 420252371 is about 749.0372066416.

The spelling of 420252371 in words is "four hundred twenty million, two hundred fifty-two thousand, three hundred seventy-one".