123535091 has 4 divisors (see below), whose sum is σ = 126548184. Its totient is φ = 120522000.

The previous prime is 123535057. The next prime is 123535133. The reversal of 123535091 is 190535321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123535091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123535051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1506485 + ... + 1506566.

It is an arithmetic number, because the mean of its divisors is an integer number (31637046).

Almost surely, 2^123535091 is an apocalyptic number.

123535091 is a deficient number, since it is larger than the sum of its proper divisors (3013093).

123535091 is an equidigital number, since it uses as much as digits as its factorization.

123535091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013092.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 123535091 is about 11114.6340920428. The cubic root of 123535091 is about 498.0391078571.

The spelling of 123535091 in words is "one hundred twenty-three million, five hundred thirty-five thousand, ninety-one".