1421890135 has 4 divisors (see below), whose sum is σ = 1706268168. Its totient is φ = 1137512104.

The previous prime is 1421890133. The next prime is 1421890157. The reversal of 1421890135 is 5310981241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5310981241 = 163 ⋅32582707.

It is a cyclic number.

It is not a de Polignac number, because 1421890135 - 2¹ = 1421890133 is a prime.

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 1421890135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421890133) 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 in 3 ways as a sum of consecutive naturals, for example, 142189009 + ... + 142189018.

It is an arithmetic number, because the mean of its divisors is an integer number (426567042).

Almost surely, 2^1421890135 is an apocalyptic number.

1421890135 is a deficient number, since it is larger than the sum of its proper divisors (284378033).

1421890135 is an equidigital number, since it uses as much as digits as its factorization.

1421890135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284378032.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1421890135 is about 37707.9585101077. The cubic root of 1421890135 is about 1124.4893511270.

The spelling of 1421890135 in words is "one billion, four hundred twenty-one million, eight hundred ninety thousand, one hundred thirty-five".