102842378 has 4 divisors (see below), whose sum is σ = 154263570. Its totient is φ = 51421188.

The previous prime is 102842359. The next prime is 102842423. The reversal of 102842378 is 873248201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 22686169 = 8953^2 + 4763^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25710593 + ... + 25710596.

Almost surely, 2^102842378 is an apocalyptic number.

102842378 is a deficient number, since it is larger than the sum of its proper divisors (51421192).

102842378 is an equidigital number, since it uses as much as digits as its factorization.

102842378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51421191.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 102842378 is about 10141.1231133440. The cubic root of 102842378 is about 468.5155791892.

The spelling of 102842378 in words is "one hundred two million, eight hundred forty-two thousand, three hundred seventy-eight".