123424619 has 4 divisors (see below), whose sum is σ = 123941280. Its totient is φ = 122907960.

The previous prime is 123424603. The next prime is 123424621. The reversal of 123424619 is 916424321.

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

It is a cyclic number.

It is not a de Polignac number, because 123424619 - 2⁴ = 123424603 is a prime.

It is a super-2 number, since 2×123424619² = 30467273150590322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123429619) 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, 257972 + ... + 258449.

It is an arithmetic number, because the mean of its divisors is an integer number (30985320).

Almost surely, 2^123424619 is an apocalyptic number.

123424619 is a deficient number, since it is larger than the sum of its proper divisors (516661).

123424619 is an equidigital number, since it uses as much as digits as its factorization.

123424619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516660.

The product of its digits is 10368, while the sum is 32.

The square root of 123424619 is about 11109.6633162306. The cubic root of 123424619 is about 497.8906054235.

It can be divided in two parts, 12342 and 4619, that added together give a palindrome (16961).

The spelling of 123424619 in words is "one hundred twenty-three million, four hundred twenty-four thousand, six hundred nineteen".