1421555535 has 16 divisors (see below), whose sum is σ = 2527210080. Its totient is φ = 758162880.

The previous prime is 1421555519. The next prime is 1421555563. The reversal of 1421555535 is 5355551241.

It is not a de Polignac number, because 1421555535 - 2⁴ = 1421555519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421555535.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5264886 + ... + 5265155.

It is an arithmetic number, because the mean of its divisors is an integer number (157950630).

Almost surely, 2^1421555535 is an apocalyptic number.

1421555535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1421555535 is a deficient number, since it is larger than the sum of its proper divisors (1105654545).

1421555535 is a wasteful number, since it uses less digits than its factorization.

1421555535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10530055 (or 10530049 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 1421555535 is about 37703.5215198793. The cubic root of 1421555535 is about 1124.4011390482.

The spelling of 1421555535 in words is "one billion, four hundred twenty-one million, five hundred fifty-five thousand, five hundred thirty-five".