1421421311 has 4 divisors (see below), whose sum is σ = 1421818992. Its totient is φ = 1421023632.

The previous prime is 1421421307. The next prime is 1421421317. The reversal of 1421421311 is 1131241241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131241241 = 13 ⋅87018557.

It is a cyclic number.

It is not a de Polignac number, because 1421421311 - 2² = 1421421307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421421317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193430 + ... + 200643.

It is an arithmetic number, because the mean of its divisors is an integer number (355454748).

Almost surely, 2^1421421311 is an apocalyptic number.

1421421311 is a deficient number, since it is larger than the sum of its proper divisors (397681).

1421421311 is an equidigital number, since it uses as much as digits as its factorization.

1421421311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397680.

The product of its digits is 192, while the sum is 20.

The square root of 1421421311 is about 37701.7414849765. The cubic root of 1421421311 is about 1124.3657490909.

Adding to 1421421311 its reverse (1131241241), we get a palindrome (2552662552).

The spelling of 1421421311 in words is "one billion, four hundred twenty-one million, four hundred twenty-one thousand, three hundred eleven".