430421261 has 4 divisors (see below), whose sum is σ = 430465500. Its totient is φ = 430377024.

The previous prime is 430421227. The next prime is 430421311. The reversal of 430421261 is 162124034.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 162124034 = 2 ⋅81062017.

It can be written as a sum of positive squares in 2 ways, for example, as 230736100 + 199685161 = 15190^2 + 14131^2 .

It is a cyclic number.

It is not a de Polignac number, because 430421261 - 2⁶ = 430421197 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 (430426261) 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, 446 + ... + 29343.

It is an arithmetic number, because the mean of its divisors is an integer number (107616375).

Almost surely, 2^430421261 is an apocalyptic number.

It is an amenable number.

430421261 is a deficient number, since it is larger than the sum of its proper divisors (44239).

430421261 is a wasteful number, since it uses less digits than its factorization.

430421261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44238.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 430421261 is about 20746.5963714533. The cubic root of 430421261 is about 755.0306325013.

Adding to 430421261 its reverse (162124034), we get a palindrome (592545295).

The spelling of 430421261 in words is "four hundred thirty million, four hundred twenty-one thousand, two hundred sixty-one".