123487091 has 8 divisors (see below), whose sum is σ = 151984224. Its totient is φ = 97704000.

The previous prime is 123487073. The next prime is 123487153. The reversal of 123487091 is 190784321.

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

It is a cyclic number.

It is not a de Polignac number, because 123487091 - 2⁶ = 123487027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123487051) 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, 678410 + ... + 678591.

It is an arithmetic number, because the mean of its divisors is an integer number (18998028).

Almost surely, 2^123487091 is an apocalyptic number.

123487091 is a deficient number, since it is larger than the sum of its proper divisors (28497133).

123487091 is a wasteful number, since it uses less digits than its factorization.

123487091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357021.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 123487091 is about 11112.4745669000. The cubic root of 123487091 is about 497.9745945438.

The spelling of 123487091 in words is "one hundred twenty-three million, four hundred eighty-seven thousand, ninety-one".