102066493 has 4 divisors (see below), whose sum is σ = 102183228. Its totient is φ = 101949760.

The previous prime is 102066491. The next prime is 102066529. The reversal of 102066493 is 394660201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394660201 = 13 ⋅30358477.

It can be written as a sum of positive squares in 2 ways, for example, as 25381444 + 76685049 = 5038^2 + 8757^2 .

It is a cyclic number.

It is not a de Polignac number, because 102066493 - 2¹ = 102066491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102066491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57046 + ... + 58807.

It is an arithmetic number, because the mean of its divisors is an integer number (25545807).

Almost surely, 2^102066493 is an apocalyptic number.

It is an amenable number.

102066493 is a deficient number, since it is larger than the sum of its proper divisors (116735).

102066493 is an equidigital number, since it uses as much as digits as its factorization.

102066493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116734.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 102066493 is about 10102.7962960757. The cubic root of 102066493 is about 467.3343792634.

The spelling of 102066493 in words is "one hundred two million, sixty-six thousand, four hundred ninety-three".