102081834 has 12 divisors (see below), whose sum is σ = 221177346. Its totient is φ = 34027272.

The previous prime is 102081829. The next prime is 102081839. The reversal of 102081834 is 438180201.

It is an interprime number because it is at equal distance from previous prime (102081829) and next prime (102081839).

It can be written as a sum of positive squares in only one way, i.e., 85655025 + 16426809 = 9255^2 + 4053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102081798 and 102081807.

It is not an unprimeable number, because it can be changed into a prime (102081839) 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, 2835589 + ... + 2835624.

Almost surely, 2^102081834 is an apocalyptic number.

102081834 is an abundant number, since it is smaller than the sum of its proper divisors (119095512).

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

102081834 is a wasteful number, since it uses less digits than its factorization.

102081834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671221 (or 5671218 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 102081834 is about 10103.5555127886. Note that the first 4 decimals coincide. The cubic root of 102081834 is about 467.3577921626.

The spelling of 102081834 in words is "one hundred two million, eighty-one thousand, eight hundred thirty-four".