102402100 has 18 divisors (see below), whose sum is σ = 222212774. Its totient is φ = 40960800.

The previous prime is 102402089. The next prime is 102402107. The reversal of 102402100 is 1204201.

It can be written as a sum of positive squares in 3 ways, for example, as 68644 + 102333456 = 262^2 + 10116^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102402107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511911 + ... + 512110.

Almost surely, 2^102402100 is an apocalyptic number.

102402100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102402100 is an abundant number, since it is smaller than the sum of its proper divisors (119810674).

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

102402100 is a wasteful number, since it uses less digits than its factorization.

102402100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024035 (or 1024028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102402100 is about 10119.3922742426. The cubic root of 102402100 is about 467.8460362366.

Adding to 102402100 its reverse (1204201), we get a palindrome (103606301).

The spelling of 102402100 in words is "one hundred two million, four hundred two thousand, one hundred".