102132661 has 4 divisors (see below), whose sum is σ = 102232000. Its totient is φ = 102033324.

The previous prime is 102132647. The next prime is 102132721. The reversal of 102132661 is 166231201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102132661 - 2⁷ = 102132533 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 (102132601) 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, 48111 + ... + 50188.

It is an arithmetic number, because the mean of its divisors is an integer number (25558000).

Almost surely, 2^102132661 is an apocalyptic number.

It is an amenable number.

102132661 is a deficient number, since it is larger than the sum of its proper divisors (99339).

102132661 is an equidigital number, since it uses as much as digits as its factorization.

102132661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99338.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 102132661 is about 10106.0705024258. The cubic root of 102132661 is about 467.4353458017.

Adding to 102132661 its reverse (166231201), we get a palindrome (268363862).

The spelling of 102132661 in words is "one hundred two million, one hundred thirty-two thousand, six hundred sixty-one".