420251053 has 4 divisors (see below), whose sum is σ = 420950908. Its totient is φ = 419551200.

The previous prime is 420251047. The next prime is 420251077. The reversal of 420251053 is 350152024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 207878724 + 212372329 = 14418^2 + 14573^2 .

It is a cyclic number.

It is not a de Polignac number, because 420251053 - 2⁹ = 420250541 is a prime.

It is a super-2 number, since 2×420251053² = 353221895095217618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420251003) 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, 349026 + ... + 350227.

It is an arithmetic number, because the mean of its divisors is an integer number (105237727).

Almost surely, 2^420251053 is an apocalyptic number.

It is an amenable number.

420251053 is a deficient number, since it is larger than the sum of its proper divisors (699855).

420251053 is an equidigital number, since it uses as much as digits as its factorization.

420251053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699854.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 420251053 is about 20500.0256829107. The cubic root of 420251053 is about 749.0364235946.

It can be divided in two parts, 4202 and 51053, that added together give a palindrome (55255).

The spelling of 420251053 in words is "four hundred twenty million, two hundred fifty-one thousand, fifty-three".