1421235251475 has 96 divisors (see below), whose sum is σ = 2537581126080. Its totient is φ = 697738199040.

The previous prime is 1421235251399. The next prime is 1421235251477. The reversal of 1421235251475 is 5741525321241.

It is not a de Polignac number, because 1421235251475 - 2¹² = 1421235247379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421235251477) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 837497827 + ... + 837499523.

It is an arithmetic number, because the mean of its divisors is an integer number (26433136730).

Almost surely, 2^{1421235251475} is an apocalyptic number.

1421235251475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1421235251475 is a deficient number, since it is larger than the sum of its proper divisors (1116345874605).

1421235251475 is a wasteful number, since it uses less digits than its factorization.

1421235251475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609 (or 3604 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The spelling of 1421235251475 in words is "one trillion, four hundred twenty-one billion, two hundred thirty-five million, two hundred fifty-one thousand, four hundred seventy-five".