402424120213 has 4 divisors (see below), whose sum is σ = 407936779468. Its totient is φ = 396911460960.

The previous prime is 402424120211. The next prime is 402424120289. The reversal of 402424120213 is 312021424204.

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 105967827729 + 296456292484 = 325527^2 + 544478^2 .

It is a cyclic number.

It is not a de Polignac number, because 402424120213 - 2¹ = 402424120211 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 (402424120211) 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, 2756329518 + ... + 2756329663.

It is an arithmetic number, because the mean of its divisors is an integer number (101984194867).

Almost surely, 2^402424120213 is an apocalyptic number.

It is an amenable number.

402424120213 is a deficient number, since it is larger than the sum of its proper divisors (5512659255).

402424120213 is an equidigital number, since it uses as much as digits as its factorization.

402424120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512659254.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 402424120213 its reverse (312021424204), we get a palindrome (714445544417).

The spelling of 402424120213 in words is "four hundred two billion, four hundred twenty-four million, one hundred twenty thousand, two hundred thirteen".