1421402131 has 2 divisors, whose sum is σ = 1421402132. Its totient is φ = 1421402130.

The previous prime is 1421402123. The next prime is 1421402149. The reversal of 1421402131 is 1312041241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421402131 - 2³ = 1421402123 is a prime.

It is a super-2 number, since 2×1421402131² = 4040768036022682322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421402099 and 1421402108.

It is not a weakly prime, because it can be changed into another prime (1421402431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710701065 + 710701066.

It is an arithmetic number, because the mean of its divisors is an integer number (710701066).

Almost surely, 2^1421402131 is an apocalyptic number.

1421402131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421402131 is an equidigital number, since it uses as much as digits as its factorization.

1421402131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1421402131 is about 37701.4871192106. The cubic root of 1421402131 is about 1124.3606918449.

Adding to 1421402131 its reverse (1312041241), we get a palindrome (2733443372).

The spelling of 1421402131 in words is "one billion, four hundred twenty-one million, four hundred two thousand, one hundred thirty-one".