1187090 has 8 divisors (see below), whose sum is σ = 2136780. Its totient is φ = 474832.

The previous prime is 1187089. The next prime is 1187107. The reversal of 1187090 is 907811.

It can be written as a sum of positive squares in 2 ways, for example, as 1129969 + 57121 = 1063^2 + 239^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59345 + ... + 59364.

2^1187090 is an apocalyptic number.

1187090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1187090 is a deficient number, since it is larger than the sum of its proper divisors (949690).

1187090 is a wasteful number, since it uses less digits than its factorization.

1187090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118716.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1187090 is about 1089.5365987428. The cubic root of 1187090 is about 105.8834009216.

The spelling of 1187090 in words is "one million, one hundred eighty-seven thousand, ninety".