1421254331 has 8 divisors (see below), whose sum is σ = 1626919680. Its totient is φ = 1216246248.

The previous prime is 1421254297. The next prime is 1421254343. The reversal of 1421254331 is 1334521241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421254331 - 2²⁶ = 1354145467 is a prime.

It is a super-2 number, since 2×1421254331² = 4039927746772515122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421254331.

It is not an unprimeable number, because it can be changed into a prime (1421254391) 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 7 ways as a sum of consecutive naturals, for example, 159671 + ... + 168336.

It is an arithmetic number, because the mean of its divisors is an integer number (203364960).

Almost surely, 2^1421254331 is an apocalyptic number.

1421254331 is a deficient number, since it is larger than the sum of its proper divisors (205665349).

1421254331 is an equidigital number, since it uses as much as digits as its factorization.

1421254331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328633.

The product of its digits is 2880, while the sum is 26.

The square root of 1421254331 is about 37699.5269333715. The cubic root of 1421254331 is about 1124.3217194652.

Adding to 1421254331 its reverse (1334521241), we get a palindrome (2755775572).

The spelling of 1421254331 in words is "one billion, four hundred twenty-one million, two hundred fifty-four thousand, three hundred thirty-one".