102145500 has 72 divisors (see below), whose sum is σ = 322249200. Its totient is φ = 27237600.

The previous prime is 102145489. The next prime is 102145513. The reversal of 102145500 is 5541201.

102145500 is a `hidden beast` number, since 102 + 14 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6850 + ... + 15849.

Almost surely, 2^102145500 is an apocalyptic number.

102145500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102145500 is an abundant number, since it is smaller than the sum of its proper divisors (220103700).

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

102145500 is a wasteful number, since it uses less digits than its factorization.

102145500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22724 (or 22709 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 102145500 is about 10106.7056947356. The cubic root of 102145500 is about 467.4549319324.

Adding to 102145500 its reverse (5541201), we get a palindrome (107686701).

The spelling of 102145500 in words is "one hundred two million, one hundred forty-five thousand, five hundred".