1220176423 has 4 divisors (see below), whose sum is σ = 1221124320. Its totient is φ = 1219228528.

The previous prime is 1220176379. The next prime is 1220176457. The reversal of 1220176423 is 3246710221.

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 1220176423 - 2¹³ = 1220168231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220176391 and 1220176400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220186423) 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, 472015 + ... + 474592.

It is an arithmetic number, because the mean of its divisors is an integer number (305281080).

Almost surely, 2^1220176423 is an apocalyptic number.

1220176423 is a deficient number, since it is larger than the sum of its proper divisors (947897).

1220176423 is an equidigital number, since it uses as much as digits as its factorization.

1220176423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947896.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1220176423 is about 34931.0237897488. The cubic root of 1220176423 is about 1068.5812340107.

Adding to 1220176423 its reverse (3246710221), we get a palindrome (4466886644).

The spelling of 1220176423 in words is "one billion, two hundred twenty million, one hundred seventy-six thousand, four hundred twenty-three".