1420053251 has 4 divisors (see below), whose sum is σ = 1420249104. Its totient is φ = 1419857400.

The previous prime is 1420053191. The next prime is 1420053289. The reversal of 1420053251 is 1523500241.

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 1420053251 - 2²² = 1415858947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420050251) 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, 86615 + ... + 101696.

It is an arithmetic number, because the mean of its divisors is an integer number (355062276).

Almost surely, 2^1420053251 is an apocalyptic number.

1420053251 is a deficient number, since it is larger than the sum of its proper divisors (195853).

1420053251 is an equidigital number, since it uses as much as digits as its factorization.

1420053251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195852.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1420053251 is about 37683.5939236161. The cubic root of 1420053251 is about 1124.0049145883.

Adding to 1420053251 its reverse (1523500241), we get a palindrome (2943553492).

The spelling of 1420053251 in words is "one billion, four hundred twenty million, fifty-three thousand, two hundred fifty-one".