1220423255 has 8 divisors (see below), whose sum is σ = 1464925824. Its totient is φ = 976060000.

The previous prime is 1220423233. The next prime is 1220423273. The reversal of 1220423255 is 5523240221.

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

It is not a de Polignac number, because 1220423255 - 2⁸ = 1220422999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 14471 + ... + 51480.

It is an arithmetic number, because the mean of its divisors is an integer number (183115728).

Almost surely, 2^1220423255 is an apocalyptic number.

1220423255 is a deficient number, since it is larger than the sum of its proper divisors (244502569).

1220423255 is an equidigital number, since it uses as much as digits as its factorization.

1220423255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69657.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1220423255 is about 34934.5567454347. The cubic root of 1220423255 is about 1068.6532843183.

Adding to 1220423255 its reverse (5523240221), we get a palindrome (6743663476).

The spelling of 1220423255 in words is "one billion, two hundred twenty million, four hundred twenty-three thousand, two hundred fifty-five".