420430123144221 has 48 divisors (see below), whose sum is σ = 581287480310784. Its totient is φ = 270287490348288.

The previous prime is 420430123144181. The next prime is 420430123144231. The reversal of 420430123144221 is 122441321034024.

It is not a de Polignac number, because 420430123144221 - 2¹³ = 420430123136029 is a prime.

It is a super-2 number, since 2×420430123144221² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420430123144231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9360133455 + ... + 9360178371.

It is an arithmetic number, because the mean of its divisors is an integer number (12110155839808).

Almost surely, 2^{420430123144221} is an apocalyptic number.

It is an amenable number.

420430123144221 is a deficient number, since it is larger than the sum of its proper divisors (160857357166563).

420430123144221 is a wasteful number, since it uses less digits than its factorization.

420430123144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49478 (or 49449 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 420430123144221 its reverse (122441321034024), we get a palindrome (542871444178245).

The spelling of 420430123144221 in words is "four hundred twenty trillion, four hundred thirty billion, one hundred twenty-three million, one hundred forty-four thousand, two hundred twenty-one".