1420420223 has 4 divisors (see below), whose sum is σ = 1482177648. Its totient is φ = 1358662800.

The previous prime is 1420420219. The next prime is 1420420231. The reversal of 1420420223 is 3220240241.

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 1420420223 - 2² = 1420420219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420420195 and 1420420204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420420823) 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, 30878678 + ... + 30878723.

It is an arithmetic number, because the mean of its divisors is an integer number (370544412).

Almost surely, 2^1420420223 is an apocalyptic number.

1420420223 is a deficient number, since it is larger than the sum of its proper divisors (61757425).

1420420223 is an equidigital number, since it uses as much as digits as its factorization.

1420420223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61757424.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1420420223 is about 37688.4627306554. The cubic root of 1420420223 is about 1124.1017285177.

Adding to 1420420223 its reverse (3220240241), we get a palindrome (4640660464).

The spelling of 1420420223 in words is "one billion, four hundred twenty million, four hundred twenty thousand, two hundred twenty-three".