402430033421 has 4 divisors (see below), whose sum is σ = 433386189852. Its totient is φ = 371473876992.

The previous prime is 402430033381. The next prime is 402430033459. The reversal of 402430033421 is 124330034204.

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 24222253225 + 378207780196 = 155635^2 + 614986^2 .

It is a cyclic number.

It is not a de Polignac number, because 402430033421 - 2¹⁴ = 402430017037 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 (402430633421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15478078196 + ... + 15478078221.

It is an arithmetic number, because the mean of its divisors is an integer number (108346547463).

Almost surely, 2^402430033421 is an apocalyptic number.

It is an amenable number.

402430033421 is a deficient number, since it is larger than the sum of its proper divisors (30956156431).

402430033421 is a wasteful number, since it uses less digits than its factorization.

402430033421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30956156430.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 402430033421 its reverse (124330034204), we get a palindrome (526760067625).

The spelling of 402430033421 in words is "four hundred two billion, four hundred thirty million, thirty-three thousand, four hundred twenty-one".