102423218 has 4 divisors (see below), whose sum is σ = 153634830. Its totient is φ = 51211608.

The previous prime is 102423203. The next prime is 102423241. The reversal of 102423218 is 812324201.

It is a happy number.

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., 60264169 + 42159049 = 7763^2 + 6493^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102423193 and 102423202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605803 + ... + 25605806.

Almost surely, 2^102423218 is an apocalyptic number.

102423218 is a deficient number, since it is larger than the sum of its proper divisors (51211612).

102423218 is an equidigital number, since it uses as much as digits as its factorization.

102423218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51211611.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 102423218 is about 10120.4356625592. The cubic root of 102423218 is about 467.8781947356.

Adding to 102423218 its reverse (812324201), we get a palindrome (914747419).

It can be divided in two parts, 1024 and 23218, that added together give a palindrome (24242).

The spelling of 102423218 in words is "one hundred two million, four hundred twenty-three thousand, two hundred eighteen".