102502145 has 8 divisors (see below), whose sum is σ = 128350656. Its totient is φ = 78436336.

The previous prime is 102502121. The next prime is 102502157. The reversal of 102502145 is 541205201.

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

It is a cyclic number.

It is not a de Polignac number, because 102502145 - 2¹⁸ = 102240001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445547 + ... + 445776.

It is an arithmetic number, because the mean of its divisors is an integer number (16043832).

Almost surely, 2^102502145 is an apocalyptic number.

It is an amenable number.

102502145 is a deficient number, since it is larger than the sum of its proper divisors (25848511).

102502145 is an equidigital number, since it uses as much as digits as its factorization.

102502145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891351.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 102502145 is about 10124.3342991033. The cubic root of 102502145 is about 467.9983456853.

Adding to 102502145 its reverse (541205201), we get a palindrome (643707346).

The spelling of 102502145 in words is "one hundred two million, five hundred two thousand, one hundred forty-five".