1421235840164 has 24 divisors (see below), whose sum is σ = 2848691556480. Its totient is φ = 607768243776.

The previous prime is 1421235840161. The next prime is 1421235840179. The reversal of 1421235840164 is 4610485321241.

It is a happy number.

It is a super-2 number, since 2×1421235840164² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421235840161) 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 in 7 ways as a sum of consecutive naturals, for example, 55521584 + ... + 55547175.

It is an arithmetic number, because the mean of its divisors is an integer number (118695481520).

Almost surely, 2^{1421235840164} is an apocalyptic number.

1421235840164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421235840164 is an abundant number, since it is smaller than the sum of its proper divisors (1427455716316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421235840164 is a wasteful number, since it uses less digits than its factorization.

1421235840164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111069227 (or 111069225 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 1421235840164 in words is "one trillion, four hundred twenty-one billion, two hundred thirty-five million, eight hundred forty thousand, one hundred sixty-four".