14001521420 has 24 divisors (see below), whose sum is σ = 30950732400. Its totient is φ = 5305839552.

The previous prime is 14001521383. The next prime is 14001521437. The reversal of 14001521420 is 2412510041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 14001521392 and 14001521401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18422675 + ... + 18423434.

It is an arithmetic number, because the mean of its divisors is an integer number (1289613850).

Almost surely, 2^14001521420 is an apocalyptic number.

14001521420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14001521420 is an abundant number, since it is smaller than the sum of its proper divisors (16949210980).

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

14001521420 is a wasteful number, since it uses less digits than its factorization.

14001521420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36846137 (or 36846135 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The spelling of 14001521420 in words is "fourteen billion, one million, five hundred twenty-one thousand, four hundred twenty".