402102 has 24 divisors (see below), whose sum is σ = 884520. Its totient is φ = 132000.

The previous prime is 402091. The next prime is 402107. The reversal of 402102 is 201204.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402107) by changing a digit.

402102 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (36855).

2⁴⁰²¹⁰² is an apocalyptic number.

402102 is an abundant number, since it is smaller than the sum of its proper divisors (482418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402102 is a wasteful number, since it uses less digits than its factorization.

402102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 402102 is about 634.1151315022. The cubic root of 402102 is about 73.8094684571.

Adding to 402102 its reverse (201204), we get a palindrome (603306).

The spelling of 402102 in words is "four hundred two thousand, one hundred two", and thus it is an iban number.