102115450 has 24 divisors (see below), whose sum is σ = 191719872. Its totient is φ = 40462320.

The previous prime is 102115441. The next prime is 102115463. The reversal of 102115450 is 54511201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4194 + ... + 14893.

It is an arithmetic number, because the mean of its divisors is an integer number (7988328).

Almost surely, 2^102115450 is an apocalyptic number.

102115450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102115450 is a deficient number, since it is larger than the sum of its proper divisors (89604422).

102115450 is a wasteful number, since it uses less digits than its factorization.

102115450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206 (or 19201 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 102115450 is about 10105.2189486423. The cubic root of 102115450 is about 467.4090875293.

Adding to 102115450 its reverse (54511201), we get a palindrome (156626651).

It can be divided in two parts, 1021 and 15450, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 102115450 in words is "one hundred two million, one hundred fifteen thousand, four hundred fifty".