1420320253 has 4 divisors (see below), whose sum is σ = 1549440288. Its totient is φ = 1291200220.

The previous prime is 1420320197. The next prime is 1420320263. The reversal of 1420320253 is 3520230241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1420320253 - 2²¹ = 1418223101 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420320263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64560001 + ... + 64560022.

It is an arithmetic number, because the mean of its divisors is an integer number (387360072).

Almost surely, 2^1420320253 is an apocalyptic number.

It is an amenable number.

1420320253 is a deficient number, since it is larger than the sum of its proper divisors (129120035).

1420320253 is a wasteful number, since it uses less digits than its factorization.

1420320253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129120034.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1420320253 is about 37687.1364393741. The cubic root of 1420320253 is about 1124.0753562548.

Adding to 1420320253 its reverse (3520230241), we get a palindrome (4940550494).

The spelling of 1420320253 in words is "one billion, four hundred twenty million, three hundred twenty thousand, two hundred fifty-three".