102242020 has 12 divisors (see below), whose sum is σ = 214708284. Its totient is φ = 40896800.

The previous prime is 102242017. The next prime is 102242047. The reversal of 102242020 is 20242201.

It can be written as a sum of positive squares in 2 ways, for example, as 24661156 + 77580864 = 4966^2 + 8808^2 .

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 3 ways as a sum of consecutive naturals, for example, 2556031 + ... + 2556070.

It is an arithmetic number, because the mean of its divisors is an integer number (17892357).

Almost surely, 2^102242020 is an apocalyptic number.

102242020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102242020 is an abundant number, since it is smaller than the sum of its proper divisors (112466264).

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

102242020 is a wasteful number, since it uses less digits than its factorization.

102242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112110 (or 5112108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 102242020 is about 10111.4796147745. The cubic root of 102242020 is about 467.6021224472.

Adding to 102242020 its reverse (20242201), we get a palindrome (122484221).

The spelling of 102242020 in words is "one hundred two million, two hundred forty-two thousand, twenty".