123586990 has 16 divisors (see below), whose sum is σ = 226654848. Its totient is φ = 48501856.

The previous prime is 123586979. The next prime is 123587003. The reversal of 123586990 is 99685321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116062 + ... + 117121.

It is an arithmetic number, because the mean of its divisors is an integer number (14165928).

Almost surely, 2^123586990 is an apocalyptic number.

123586990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123586990 is a deficient number, since it is larger than the sum of its proper divisors (103067858).

123586990 is a wasteful number, since it uses less digits than its factorization.

123586990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233243.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 123586990 is about 11116.9685616179. The cubic root of 123586990 is about 498.1088427333.

The spelling of 123586990 in words is "one hundred twenty-three million, five hundred eighty-six thousand, nine hundred ninety".