1423348721 has 8 divisors (see below), whose sum is σ = 1485847104. Its totient is φ = 1360901520.

The previous prime is 1423348709. The next prime is 1423348723. The reversal of 1423348721 is 1278433241.

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

It is a cyclic number.

It is not a de Polignac number, because 1423348721 - 2¹⁰ = 1423347697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423348723) 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 7 ways as a sum of consecutive naturals, for example, 50831 + ... + 73691.

It is an arithmetic number, because the mean of its divisors is an integer number (185730888).

Almost surely, 2^1423348721 is an apocalyptic number.

It is an amenable number.

1423348721 is a deficient number, since it is larger than the sum of its proper divisors (62498383).

1423348721 is a wasteful number, since it uses less digits than its factorization.

1423348721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25591.

The product of its digits is 32256, while the sum is 35.

The square root of 1423348721 is about 37727.2941118231. The cubic root of 1423348721 is about 1124.8737230445.

The spelling of 1423348721 in words is "one billion, four hundred twenty-three million, three hundred forty-eight thousand, seven hundred twenty-one".