102666029 has 4 divisors (see below), whose sum is σ = 102786684. Its totient is φ = 102545376.

The previous prime is 102666023. The next prime is 102666049. The reversal of 102666029 is 920666201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99960004 + 2706025 = 9998^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 102666029 - 2⁴ = 102666013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102665986 and 102666004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102666023) 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, 59042 + ... + 60755.

It is an arithmetic number, because the mean of its divisors is an integer number (25696671).

Almost surely, 2^102666029 is an apocalyptic number.

It is an amenable number.

102666029 is a deficient number, since it is larger than the sum of its proper divisors (120655).

102666029 is an equidigital number, since it uses as much as digits as its factorization.

102666029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120654.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 102666029 is about 10132.4246357918. The cubic root of 102666029 is about 468.2476302300.

The spelling of 102666029 in words is "one hundred two million, six hundred sixty-six thousand, twenty-nine".