402213 has 16 divisors (see below), whose sum is σ = 622080. Its totient is φ = 226416.

The previous prime is 402197. The next prime is 402221. The reversal of 402213 is 312204.

It is not a de Polignac number, because 402213 - 2⁴ = 402197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2158 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2⁴⁰²²¹³ is an apocalyptic number.

It is an amenable number.

402213 is a deficient number, since it is larger than the sum of its proper divisors (219867).

402213 is a wasteful number, since it uses less digits than its factorization.

402213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 402213 is about 634.2026490011. The cubic root of 402213 is about 73.8162595178.

Adding to 402213 its reverse (312204), we get a palindrome (714417).

Subtracting from 402213 its reverse (312204), we obtain a palindrome (90009).

The spelling of 402213 in words is "four hundred two thousand, two hundred thirteen".