102402 has 12 divisors (see below), whose sum is σ = 221910. Its totient is φ = 34128.

The previous prime is 102397. The next prime is 102407. The reversal of 102402 is 204201.

It is an interprime number because it is at equal distance from previous prime (102397) and next prime (102407).

It can be written as a sum of positive squares in only one way, i.e., 62001 + 40401 = 249^2 + 201^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102407) by changing a digit.

102402 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 5 ways as a sum of consecutive naturals, for example, 2827 + ... + 2862.

2¹⁰²⁴⁰² is an apocalyptic number.

102402 is an abundant number, since it is smaller than the sum of its proper divisors (119508).

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

102402 is a wasteful number, since it uses less digits than its factorization.

102402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697 (or 5694 counting only the distinct ones).

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

The square root of 102402 is about 320.0031249847. The cubic root of 102402 is about 46.7845883946.

Adding to 102402 its reverse (204201), we get a palindrome (306603).

The spelling of 102402 in words is "one hundred two thousand, four hundred two", and thus it is an iban number.