1421406887 has 2 divisors, whose sum is σ = 1421406888. Its totient is φ = 1421406886.

The previous prime is 1421406829. The next prime is 1421406919. The reversal of 1421406887 is 7886041241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421406887 - 2¹⁰ = 1421405863 is a prime.

It is a super-2 number, since 2×1421406887² = 4040795076822061538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421406817) 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, 710703443 + 710703444.

It is an arithmetic number, because the mean of its divisors is an integer number (710703444).

Almost surely, 2^1421406887 is an apocalyptic number.

1421406887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421406887 is an equidigital number, since it uses as much as digits as its factorization.

1421406887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1421406887 is about 37701.5501935928. The cubic root of 1421406887 is about 1124.3619458774.

The spelling of 1421406887 in words is "one billion, four hundred twenty-one million, four hundred six thousand, eight hundred eighty-seven".