420010253 has 8 divisors (see below), whose sum is σ = 453020568. Its totient is φ = 387100224.

The previous prime is 420010247. The next prime is 420010271. The reversal of 420010253 is 352010024.

It can be written as a sum of positive squares in 4 ways, for example, as 3319684 + 416690569 = 1822^2 + 20413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420010253 - 2⁴ = 420010237 is a prime.

It is a super-2 number, since 2×420010253² = 352817225250248018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420010223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16250 + ... + 33227.

It is an arithmetic number, because the mean of its divisors is an integer number (56627571).

Almost surely, 2^420010253 is an apocalyptic number.

It is an amenable number.

420010253 is a deficient number, since it is larger than the sum of its proper divisors (33010315).

420010253 is a wasteful number, since it uses less digits than its factorization.

420010253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50143.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 420010253 is about 20494.1516779788. The cubic root of 420010253 is about 748.8933325936.

Adding to 420010253 its reverse (352010024), we get a palindrome (772020277).

The spelling of 420010253 in words is "four hundred twenty million, ten thousand, two hundred fifty-three".