102442280 has 32 divisors (see below), whose sum is σ = 232786440. Its totient is φ = 40569600.

The previous prime is 102442247. The next prime is 102442303. The reversal of 102442280 is 82244201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95609284 + 6832996 = 9778^2 + 2614^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8639 + ... + 16718.

Almost surely, 2^102442280 is an apocalyptic number.

102442280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102442280 is an abundant number, since it is smaller than the sum of its proper divisors (130344160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102442280 is a wasteful number, since it uses less digits than its factorization.

102442280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25469 (or 25465 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 102442280 is about 10121.3773766222. The cubic root of 102442280 is about 467.9072185615.

Adding to 102442280 its reverse (82244201), we get a palindrome (184686481).

The spelling of 102442280 in words is "one hundred two million, four hundred forty-two thousand, two hundred eighty".