187142660 has 24 divisors (see below), whose sum is σ = 405678336. Its totient is φ = 72442080.

The previous prime is 187142653. The next prime is 187142663. The reversal of 187142660 is 66241781.

It is a self number, because there is not a number n which added to its sum of digits gives 187142660.

It is not an unprimeable number, because it can be changed into a prime (187142663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150302 + ... + 151541.

It is an arithmetic number, because the mean of its divisors is an integer number (16903264).

Almost surely, 2^187142660 is an apocalyptic number.

187142660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187142660 is an abundant number, since it is smaller than the sum of its proper divisors (218535676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187142660 is a wasteful number, since it uses less digits than its factorization.

187142660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301883 (or 301881 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 187142660 is about 13680.0095029207. The cubic root of 187142660 is about 571.9932881016.

The spelling of 187142660 in words is "one hundred eighty-seven million, one hundred forty-two thousand, six hundred sixty".