102140378 has 24 divisors (see below), whose sum is σ = 165734100. Its totient is φ = 47151104.

The previous prime is 102140377. The next prime is 102140393. The reversal of 102140378 is 873041201.

It can be written as a sum of positive squares in 2 ways, for example, as 101949409 + 190969 = 10097^2 + 437^2 .

It is not an unprimeable number, because it can be changed into a prime (102140377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29018 + ... + 32346.

Almost surely, 2^102140378 is an apocalyptic number.

102140378 is a deficient number, since it is larger than the sum of its proper divisors (63593722).

102140378 is a wasteful number, since it uses less digits than its factorization.

102140378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406 (or 3383 counting only the distinct ones).

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

The square root of 102140378 is about 10106.4522954398. The cubic root of 102140378 is about 467.4471184239.

Adding to 102140378 its reverse (873041201), we get a palindrome (975181579).

The spelling of 102140378 in words is "one hundred two million, one hundred forty thousand, three hundred seventy-eight".