123180461 has 4 divisors (see below), whose sum is σ = 123868800. Its totient is φ = 122492124.

The previous prime is 123180443. The next prime is 123180469. The reversal of 123180461 is 164081321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123180461 - 2²² = 118986157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123180461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123180469) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 343901 + ... + 344258.

It is an arithmetic number, because the mean of its divisors is an integer number (30967200).

Almost surely, 2^123180461 is an apocalyptic number.

It is an amenable number.

123180461 is a deficient number, since it is larger than the sum of its proper divisors (688339).

123180461 is an equidigital number, since it uses as much as digits as its factorization.

123180461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688338.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 123180461 is about 11098.6693346545. The cubic root of 123180461 is about 497.5620804157.

The spelling of 123180461 in words is "one hundred twenty-three million, one hundred eighty thousand, four hundred sixty-one".