102110420 has 24 divisors (see below), whose sum is σ = 215061000. Its totient is φ = 40724352.

The previous prime is 102110399. The next prime is 102110443. The reversal of 102110420 is 24011201.

It can be written as a sum of positive squares in 4 ways, for example, as 7203856 + 94906564 = 2684^2 + 9742^2 .

It is a congruent number.

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, 335 + ... + 14294.

It is an arithmetic number, because the mean of its divisors is an integer number (8960875).

Almost surely, 2^102110420 is an apocalyptic number.

102110420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102110420 is an abundant number, since it is smaller than the sum of its proper divisors (112950580).

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

102110420 is a wasteful number, since it uses less digits than its factorization.

102110420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14987 (or 14985 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102110420 is about 10104.9700642803. The cubic root of 102110420 is about 467.4014128620.

Adding to 102110420 its reverse (24011201), we get a palindrome (126121621).

The spelling of 102110420 in words is "one hundred two million, one hundred ten thousand, four hundred twenty".