107142661 has 4 divisors (see below), whose sum is σ = 107986432. Its totient is φ = 106298892.

The previous prime is 107142649. The next prime is 107142677. The reversal of 107142661 is 166241701.

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 a de Polignac number, because none of the positive numbers 2^k-107142661 is a prime.

It is a super-2 number, since 2×107142661² = 22959099612321842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107142601) 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 3 ways as a sum of consecutive naturals, for example, 421695 + ... + 421948.

It is an arithmetic number, because the mean of its divisors is an integer number (26996608).

Almost surely, 2^107142661 is an apocalyptic number.

It is an amenable number.

107142661 is a deficient number, since it is larger than the sum of its proper divisors (843771).

107142661 is an equidigital number, since it uses as much as digits as its factorization.

107142661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843770.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 107142661 is about 10350.9739155308. The cubic root of 107142661 is about 474.9568359669.

The spelling of 107142661 in words is "one hundred seven million, one hundred forty-two thousand, six hundred sixty-one".