420232421235531 has 8 divisors (see below), whose sum is σ = 560310365063680. Its totient is φ = 280154712448872.

The previous prime is 420232421235499. The next prime is 420232421235541. The reversal of 420232421235531 is 135532124232024.

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

It is not a de Polignac number, because 420232421235531 - 2⁵ = 420232421235499 is a prime.

It is a super-2 number, since 2×420232421235531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420232421235531.

It is not an unprimeable number, because it can be changed into a prime (420232421235541) 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, 54545395 + ... + 61771068.

It is an arithmetic number, because the mean of its divisors is an integer number (70038795632960).

Almost surely, 2^{420232421235531} is an apocalyptic number.

420232421235531 is a deficient number, since it is larger than the sum of its proper divisors (140077943828149).

420232421235531 is a wasteful number, since it uses less digits than its factorization.

420232421235531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117520745.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 420232421235531 its reverse (135532124232024), we get a palindrome (555764545467555).

The spelling of 420232421235531 in words is "four hundred twenty trillion, two hundred thirty-two billion, four hundred twenty-one million, two hundred thirty-five thousand, five hundred thirty-one".