102180942 has 12 divisors (see below), whose sum is σ = 221392080. Its totient is φ = 34060308.

The previous prime is 102180941. The next prime is 102180977. The reversal of 102180942 is 249081201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102180941) 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, 2838342 + ... + 2838377.

It is an arithmetic number, because the mean of its divisors is an integer number (18449340).

Almost surely, 2^102180942 is an apocalyptic number.

102180942 is an abundant number, since it is smaller than the sum of its proper divisors (119211138).

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

102180942 is a wasteful number, since it uses less digits than its factorization.

102180942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676727 (or 5676724 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 102180942 is about 10108.4589329927. The cubic root of 102180942 is about 467.5089908382.

The spelling of 102180942 in words is "one hundred two million, one hundred eighty thousand, nine hundred forty-two".