1220423510 has 16 divisors (see below), whose sum is σ = 2213533872. Its totient is φ = 484442400.

The previous prime is 1220423467. The next prime is 1220423513. The reversal of 1220423510 is 153240221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220423513) 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, 464501 + ... + 467120.

It is an arithmetic number, because the mean of its divisors is an integer number (138345867).

Almost surely, 2^1220423510 is an apocalyptic number.

1220423510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220423510 is a deficient number, since it is larger than the sum of its proper divisors (993110362).

1220423510 is a wasteful number, since it uses less digits than its factorization.

1220423510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931759.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1220423510 is about 34934.5603951159. The cubic root of 1220423510 is about 1068.6533587478.

Adding to 1220423510 its reverse (153240221), we get a palindrome (1373663731).

The spelling of 1220423510 in words is "one billion, two hundred twenty million, four hundred twenty-three thousand, five hundred ten".