1420164223 has 4 divisors (see below), whose sum is σ = 1440166608. Its totient is φ = 1400161840.

The previous prime is 1420164197. The next prime is 1420164257. The reversal of 1420164223 is 3224610241.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420164223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420164283) 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, 10001086 + ... + 10001227.

It is an arithmetic number, because the mean of its divisors is an integer number (360041652).

Almost surely, 2^1420164223 is an apocalyptic number.

1420164223 is a deficient number, since it is larger than the sum of its proper divisors (20002385).

1420164223 is an equidigital number, since it uses as much as digits as its factorization.

1420164223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20002384.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1420164223 is about 37685.0663127982. The cubic root of 1420164223 is about 1124.0341927918.

Adding to 1420164223 its reverse (3224610241), we get a palindrome (4644774464).

The spelling of 1420164223 in words is "one billion, four hundred twenty million, one hundred sixty-four thousand, two hundred twenty-three".