102243427 has 32 divisors (see below), whose sum is σ = 127895040. Its totient is φ = 81021600.

The previous prime is 102243419. The next prime is 102243431. The reversal of 102243427 is 724342201.

It is a happy number.

It is not a de Polignac number, because 102243427 - 2³ = 102243419 is a prime.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (102243497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328602 + ... + 328912.

It is an arithmetic number, because the mean of its divisors is an integer number (3996720).

Almost surely, 2^102243427 is an apocalyptic number.

102243427 is a deficient number, since it is larger than the sum of its proper divisors (25651613).

102243427 is a wasteful number, since it uses less digits than its factorization.

102243427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 102243427 is about 10111.5491889225. The cubic root of 102243427 is about 467.6042674008.

Adding to 102243427 its reverse (724342201), we get a palindrome (826585628).

The spelling of 102243427 in words is "one hundred two million, two hundred forty-three thousand, four hundred twenty-seven".