420220004431 has 8 divisors (see below), whose sum is σ = 422823697920. Its totient is φ = 417616624152.

The previous prime is 420220004419. The next prime is 420220004461. The reversal of 420220004431 is 134400022024.

It is a happy number.

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 420220004431 - 2¹⁵ = 420219971663 is a prime.

It is a super-2 number, since 2×420220004431² (a number of 24 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 (420220004411) 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, 2982336 + ... + 3120058.

It is an arithmetic number, because the mean of its divisors is an integer number (52852962240).

Almost surely, 2^420220004431 is an apocalyptic number.

420220004431 is a deficient number, since it is larger than the sum of its proper divisors (2603693489).

420220004431 is a wasteful number, since it uses less digits than its factorization.

420220004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156605.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 420220004431 its reverse (134400022024), we get a palindrome (554620026455).

The spelling of 420220004431 in words is "four hundred twenty billion, two hundred twenty million, four thousand, four hundred thirty-one".