402102223 has 4 divisors (see below), whose sum is σ = 402319008. Its totient is φ = 401885440.

The previous prime is 402102221. The next prime is 402102229. The reversal of 402102223 is 322201204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402102223 - 2¹ = 402102221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402102197 and 402102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402102221) 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, 105586 + ... + 109327.

It is an arithmetic number, because the mean of its divisors is an integer number (100579752).

Almost surely, 2^402102223 is an apocalyptic number.

402102223 is a deficient number, since it is larger than the sum of its proper divisors (216785).

402102223 is a wasteful number, since it uses less digits than its factorization.

402102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216784.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 402102223 is about 20052.4867036485. The cubic root of 402102223 is about 738.0948210164.

Adding to 402102223 its reverse (322201204), we get a palindrome (724303427).

The spelling of 402102223 in words is "four hundred two million, one hundred two thousand, two hundred twenty-three".