430440121 has 4 divisors (see below), whose sum is σ = 430481700. Its totient is φ = 430398544.

The previous prime is 430440103. The next prime is 430440139. The reversal of 430440121 is 121044034.

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.

It is an interprime number because it is at equal distance from previous prime (430440103) and next prime (430440139).

It can be written as a sum of positive squares in 2 ways, for example, as 99600400 + 330839721 = 9980^2 + 18189^2 .

It is a cyclic number.

It is not a de Polignac number, because 430440121 - 2⁷ = 430439993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (430440161) 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, 8415 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (107620425).

Almost surely, 2^430440121 is an apocalyptic number.

It is an amenable number.

430440121 is a deficient number, since it is larger than the sum of its proper divisors (41579).

430440121 is a wasteful number, since it uses less digits than its factorization.

430440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41578.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 430440121 is about 20747.0508988627. The cubic root of 430440121 is about 755.0416602014.

Adding to 430440121 its reverse (121044034), we get a palindrome (551484155).

The spelling of 430440121 in words is "four hundred thirty million, four hundred forty thousand, one hundred twenty-one".