420454030051021 has 8 divisors (see below), whose sum is σ = 420629049640800. Its totient is φ = 420279046730448.

The previous prime is 420454030051009. The next prime is 420454030051031. The reversal of 420454030051021 is 120150030454024.

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 420454030051021 - 2²³ = 420454021662413 is a prime.

It is a super-2 number, since 2×420454030051021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420454030051031) 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, 14135055 + ... + 32260003.

It is an arithmetic number, because the mean of its divisors is an integer number (52578631205100).

Almost surely, 2^{420454030051021} is an apocalyptic number.

It is an amenable number.

420454030051021 is a deficient number, since it is larger than the sum of its proper divisors (175019589779).

420454030051021 is a wasteful number, since it uses less digits than its factorization.

420454030051021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18134603.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 420454030051021 in words is "four hundred twenty trillion, four hundred fifty-four billion, thirty million, fifty-one thousand, twenty-one".