1420402231 has 2 divisors, whose sum is σ = 1420402232. Its totient is φ = 1420402230.

The previous prime is 1420402229. The next prime is 1420402253. The reversal of 1420402231 is 1322040241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420402231 - 2¹ = 1420402229 is a prime.

It is a super-2 number, since 2×1420402231² = 4035084995659554722, which contains 22 as substring.

Together with 1420402229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1420402199 and 1420402208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420402201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710201115 + 710201116.

It is an arithmetic number, because the mean of its divisors is an integer number (710201116).

Almost surely, 2^1420402231 is an apocalyptic number.

1420402231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420402231 is an equidigital number, since it uses as much as digits as its factorization.

1420402231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1420402231 is about 37688.2240361628. The cubic root of 1420402231 is about 1124.0969822875.

Adding to 1420402231 its reverse (1322040241), we get a palindrome (2742442472).

It can be divided in two parts, 1420 and 402231, that added together give a triangular number (403651 = T₈₉₈).

The spelling of 1420402231 in words is "one billion, four hundred twenty million, four hundred two thousand, two hundred thirty-one".