212402 has 8 divisors (see below), whose sum is σ = 324012. Its totient is φ = 104400.

The previous prime is 212383. The next prime is 212411. The reversal of 212402 is 204212.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 83521 = 359^2 + 289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212402² = 90229219208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 992.

2²¹²⁴⁰² is an apocalyptic number.

212402 is a deficient number, since it is larger than the sum of its proper divisors (111610).

212402 is a wasteful number, since it uses less digits than its factorization.

212402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 212402 is about 460.8709146822. The cubic root of 212402 is about 59.6649847464.

Adding to 212402 its reverse (204212), we get a palindrome (416614).

The spelling of 212402 in words is "two hundred twelve thousand, four hundred two", and thus it is an iban number.