1423120321 has 8 divisors (see below), whose sum is σ = 1626657984. Its totient is φ = 1219641360.

The previous prime is 1423120313. The next prime is 1423120343. The reversal of 1423120321 is 1230213241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1423120321 - 2³ = 1423120313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423120921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69426 + ... + 87556.

It is an arithmetic number, because the mean of its divisors is an integer number (203332248).

Almost surely, 2^1423120321 is an apocalyptic number.

It is an amenable number.

1423120321 is a deficient number, since it is larger than the sum of its proper divisors (203537663).

1423120321 is a wasteful number, since it uses less digits than its factorization.

1423120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29351.

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

The square root of 1423120321 is about 37724.2670041447. The cubic root of 1423120321 is about 1124.8135515868.

Adding to 1423120321 its reverse (1230213241), we get a palindrome (2653333562).

The spelling of 1423120321 in words is "one billion, four hundred twenty-three million, one hundred twenty thousand, three hundred twenty-one".