187290041 has 8 divisors (see below), whose sum is σ = 194989704. Its totient is φ = 179729280.

The previous prime is 187290001. The next prime is 187290043. The reversal of 187290041 is 140092781.

It can be written as a sum of positive squares in 4 ways, for example, as 47955625 + 139334416 = 6925^2 + 11804^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187290041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (187290043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31970 + ... + 37371.

It is an arithmetic number, because the mean of its divisors is an integer number (24373713).

Almost surely, 2^187290041 is an apocalyptic number.

It is an amenable number.

187290041 is a deficient number, since it is larger than the sum of its proper divisors (7699663).

187290041 is an equidigital number, since it uses as much as digits as its factorization.

187290041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69451.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 187290041 is about 13685.3951714958. The cubic root of 187290041 is about 572.1434032108.

The spelling of 187290041 in words is "one hundred eighty-seven million, two hundred ninety thousand, forty-one".