402334421 has 4 divisors (see below), whose sum is σ = 402426432. Its totient is φ = 402242412.

The previous prime is 402334417. The next prime is 402334441. The reversal of 402334421 is 124433204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402334421 - 2² = 402334417 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 (402334441) 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, 39101 + ... + 48306.

It is an arithmetic number, because the mean of its divisors is an integer number (100606608).

Almost surely, 2^402334421 is an apocalyptic number.

It is an amenable number.

402334421 is a deficient number, since it is larger than the sum of its proper divisors (92011).

402334421 is an equidigital number, since it uses as much as digits as its factorization.

402334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92010.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 402334421 is about 20058.2756237918. The cubic root of 402334421 is about 738.2368671205.

Adding to 402334421 its reverse (124433204), we get a palindrome (526767625).

The spelling of 402334421 in words is "four hundred two million, three hundred thirty-four thousand, four hundred twenty-one".