123420119 has 4 divisors (see below), whose sum is σ = 130680144. Its totient is φ = 116160096.

The previous prime is 123420071. The next prime is 123420137. The reversal of 123420119 is 911024321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911024321 = 227 ⋅4013323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123420119 is a prime.

It is a super-2 number, since 2×123420119² = 30465051547948322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123420094 and 123420103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3629987 + ... + 3630020.

It is an arithmetic number, because the mean of its divisors is an integer number (32670036).

Almost surely, 2^123420119 is an apocalyptic number.

123420119 is a deficient number, since it is larger than the sum of its proper divisors (7260025).

123420119 is an equidigital number, since it uses as much as digits as its factorization.

123420119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260024.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 123420119 is about 11109.4607879951. The cubic root of 123420119 is about 497.8845544023.

The spelling of 123420119 in words is "one hundred twenty-three million, four hundred twenty thousand, one hundred nineteen".