102378212 has 6 divisors (see below), whose sum is σ = 179161878. Its totient is φ = 51189104.

The previous prime is 102378179. The next prime is 102378217. The reversal of 102378212 is 212873201.

It can be written as a sum of positive squares in only one way, i.e., 101284096 + 1094116 = 10064^2 + 1046^2 .

It is not an unprimeable number, because it can be changed into a prime (102378217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12797273 + ... + 12797280.

It is an arithmetic number, because the mean of its divisors is an integer number (29860313).

Almost surely, 2^102378212 is an apocalyptic number.

It is an amenable number.

102378212 is a deficient number, since it is larger than the sum of its proper divisors (76783666).

102378212 is a wasteful number, since it uses less digits than its factorization.

102378212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25594557 (or 25594555 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 102378212 is about 10118.2118973661. The cubic root of 102378212 is about 467.8096542508.

The spelling of 102378212 in words is "one hundred two million, three hundred seventy-eight thousand, two hundred twelve".