102242678 has 4 divisors (see below), whose sum is σ = 153364020. Its totient is φ = 51121338.

The previous prime is 102242677. The next prime is 102242687. The reversal of 102242678 is 876242201.

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

It is a super-2 number, since 2×102242678² = 20907130409223368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102242677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560668 + ... + 25560671.

It is an arithmetic number, because the mean of its divisors is an integer number (38341005).

Almost surely, 2^102242678 is an apocalyptic number.

102242678 is a deficient number, since it is larger than the sum of its proper divisors (51121342).

102242678 is an equidigital number, since it uses as much as digits as its factorization.

102242678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51121341.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 102242678 is about 10111.5121519978. The cubic root of 102242678 is about 467.6031255622.

Adding to 102242678 its reverse (876242201), we get a palindrome (978484879).

The spelling of 102242678 in words is "one hundred two million, two hundred forty-two thousand, six hundred seventy-eight".