1423120123 has 4 divisors (see below), whose sum is σ = 1424167128. Its totient is φ = 1422073120.

The previous prime is 1423120081. The next prime is 1423120151. The reversal of 1423120123 is 3210213241.

It is a happy number.

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 1423120123 - 2²⁹ = 886249211 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 1423120123.

It is not an unprimeable number, because it can be changed into a prime (1423120163) 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, 521461 + ... + 524182.

It is an arithmetic number, because the mean of its divisors is an integer number (356041782).

Almost surely, 2^1423120123 is an apocalyptic number.

1423120123 is a deficient number, since it is larger than the sum of its proper divisors (1047005).

1423120123 is a wasteful number, since it uses less digits than its factorization.

1423120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047004.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1423120123 is about 37724.2643798391. The cubic root of 1423120123 is about 1124.8134994214.

Adding to 1423120123 its reverse (3210213241), we get a palindrome (4633333364).

The spelling of 1423120123 in words is "one billion, four hundred twenty-three million, one hundred twenty thousand, one hundred twenty-three".