102440446 has 4 divisors (see below), whose sum is σ = 153660672. Its totient is φ = 51220222.

The previous prime is 102440431. The next prime is 102440473. The reversal of 102440446 is 644044201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102440446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25610110 + ... + 25610113.

It is an arithmetic number, because the mean of its divisors is an integer number (38415168).

Almost surely, 2^102440446 is an apocalyptic number.

102440446 is a deficient number, since it is larger than the sum of its proper divisors (51220226).

102440446 is an equidigital number, since it uses as much as digits as its factorization.

102440446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51220225.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 102440446 is about 10121.2867758996. The cubic root of 102440446 is about 467.9044262672.

Adding to 102440446 its reverse (644044201), we get a palindrome (746484647).

The spelling of 102440446 in words is "one hundred two million, four hundred forty thousand, four hundred forty-six".