420131142525521 has 8 divisors (see below), whose sum is σ = 493126900879680. Its totient is φ = 350379640098288.

The previous prime is 420131142525517. The next prime is 420131142525559. The reversal of 420131142525521 is 125525241131024.

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 420131142525521 - 2² = 420131142525517 is a prime.

It is a super-2 number, since 2×420131142525521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420131142525581) 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, 811063981451 + ... + 811063981968.

It is an arithmetic number, because the mean of its divisors is an integer number (61640862609960).

Almost surely, 2^{420131142525521} is an apocalyptic number.

It is an amenable number.

420131142525521 is a deficient number, since it is larger than the sum of its proper divisors (72995758354159).

420131142525521 is a wasteful number, since it uses less digits than its factorization.

420131142525521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622127963463.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 420131142525521 its reverse (125525241131024), we get a palindrome (545656383656545).

The spelling of 420131142525521 in words is "four hundred twenty trillion, one hundred thirty-one billion, one hundred forty-two million, five hundred twenty-five thousand, five hundred twenty-one".