1521420120453 has 8 divisors (see below), whose sum is σ = 2029206829248. Its totient is φ = 1013956745984.

The previous prime is 1521420120443. The next prime is 1521420120551. The reversal of 1521420120453 is 3540210241251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1521420120453 - 2⁵ = 1521420120421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1521420120453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521420120443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80822601 + ... + 80841422.

It is an arithmetic number, because the mean of its divisors is an integer number (253650853656).

Almost surely, 2^{1521420120453} is an apocalyptic number.

It is an amenable number.

1521420120453 is a deficient number, since it is larger than the sum of its proper divisors (507786708795).

1521420120453 is a wasteful number, since it uses less digits than its factorization.

1521420120453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161667163.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 1521420120453 in words is "one trillion, five hundred twenty-one billion, four hundred twenty million, one hundred twenty thousand, four hundred fifty-three".