1421421411 has 4 divisors (see below), whose sum is σ = 1895228552. Its totient is φ = 947614272.

The previous prime is 1421421371. The next prime is 1421421467. The reversal of 1421421411 is 1141241241.

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

It is not a de Polignac number, because 1421421411 - 2⁶ = 1421421347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421423411) 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, 236903566 + ... + 236903571.

It is an arithmetic number, because the mean of its divisors is an integer number (473807138).

Almost surely, 2^1421421411 is an apocalyptic number.

1421421411 is a deficient number, since it is larger than the sum of its proper divisors (473807141).

1421421411 is an equidigital number, since it uses as much as digits as its factorization.

1421421411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473807140.

The product of its digits is 256, while the sum is 21.

The square root of 1421421411 is about 37701.7428111752. The cubic root of 1421421411 is about 1124.3657754581.

Adding to 1421421411 its reverse (1141241241), we get a palindrome (2562662652).

The spelling of 1421421411 in words is "one billion, four hundred twenty-one million, four hundred twenty-one thousand, four hundred eleven".