102066490 has 16 divisors (see below), whose sum is σ = 184955400. Its totient is φ = 40552000.

The previous prime is 102066463. The next prime is 102066491. The reversal of 102066490 is 94660201.

It can be written as a sum of positive squares in 4 ways, for example, as 30173049 + 71893441 = 5493^2 + 8479^2 .

It is not an unprimeable number, because it can be changed into a prime (102066491) 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 7 ways as a sum of consecutive naturals, for example, 32761 + ... + 35740.

Almost surely, 2^102066490 is an apocalyptic number.

102066490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102066490 is a deficient number, since it is larger than the sum of its proper divisors (82888910).

102066490 is a wasteful number, since it uses less digits than its factorization.

102066490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68657.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 102066490 is about 10102.7961476019. The cubic root of 102066490 is about 467.3343746847.

The spelling of 102066490 in words is "one hundred two million, sixty-six thousand, four hundred ninety".