430220144021 has 4 divisors (see below), whose sum is σ = 431751176844. Its totient is φ = 428689111200.

The previous prime is 430220143999. The next prime is 430220144023. The reversal of 430220144021 is 120441022034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359724052900 + 70496091121 = 599770^2 + 265511^2 .

It is a cyclic number.

It is not a de Polignac number, because 430220144021 - 2⁶ = 430220143957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430220144023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765515990 + ... + 765516551.

It is an arithmetic number, because the mean of its divisors is an integer number (107937794211).

Almost surely, 2^430220144021 is an apocalyptic number.

It is an amenable number.

430220144021 is a deficient number, since it is larger than the sum of its proper divisors (1531032823).

430220144021 is a wasteful number, since it uses less digits than its factorization.

430220144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531032822.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 430220144021 its reverse (120441022034), we get a palindrome (550661166055).

The spelling of 430220144021 in words is "four hundred thirty billion, two hundred twenty million, one hundred forty-four thousand, twenty-one".