420400154533421 has 8 divisors (see below), whose sum is σ = 430359412770144. Its totient is φ = 410449192226640.

The previous prime is 420400154533393. The next prime is 420400154533451. The reversal of 420400154533421 is 124335451004024.

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 420400154533421 - 2²⁶ = 420400087424557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420400154533451) 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, 2073879935 + ... + 2074082636.

It is an arithmetic number, because the mean of its divisors is an integer number (53794926596268).

Almost surely, 2^{420400154533421} is an apocalyptic number.

It is an amenable number.

420400154533421 is a deficient number, since it is larger than the sum of its proper divisors (9959258236723).

420400154533421 is a wasteful number, since it uses less digits than its factorization.

420400154533421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147964971.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 420400154533421 in words is "four hundred twenty trillion, four hundred billion, one hundred fifty-four million, five hundred thirty-three thousand, four hundred twenty-one".