1420312421 has 4 divisors (see below), whose sum is σ = 1549431744. Its totient is φ = 1291193100.

The previous prime is 1420312417. The next prime is 1420312427. The reversal of 1420312421 is 1242130241.

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 1420312421 - 2² = 1420312417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420312393 and 1420312402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420312427) 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, 64559645 + ... + 64559666.

It is an arithmetic number, because the mean of its divisors is an integer number (387357936).

Almost surely, 2^1420312421 is an apocalyptic number.

1420312421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1420312421 is a deficient number, since it is larger than the sum of its proper divisors (129119323).

1420312421 is a wasteful number, since it uses less digits than its factorization.

1420312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129119322.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1420312421 is about 37687.0325310975. The cubic root of 1420312421 is about 1124.0732901071.

Adding to 1420312421 its reverse (1242130241), we get a palindrome (2662442662).

The spelling of 1420312421 in words is "one billion, four hundred twenty million, three hundred twelve thousand, four hundred twenty-one".