102060405 has 20 divisors (see below), whose sum is σ = 182953452. Its totient is φ = 54432000.

The previous prime is 102060403. The next prime is 102060421. The reversal of 102060405 is 504060201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41873841 + 60186564 = 6471^2 + 7758^2 .

It is not a de Polignac number, because 102060405 - 2¹ = 102060403 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102060403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 125596 + ... + 126405.

Almost surely, 2^102060405 is an apocalyptic number.

102060405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102060405 is a deficient number, since it is larger than the sum of its proper divisors (80893047).

102060405 is an equidigital number, since it uses as much as digits as its factorization.

102060405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252018 (or 252009 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 102060405 is about 10102.4949888629. The cubic root of 102060405 is about 467.3250873198.

It can be divided in two parts, 1020 and 60405, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 102060405 in words is "one hundred two million, sixty thousand, four hundred five".