1220023402 has 32 divisors (see below), whose sum is σ = 2077225920. Its totient is φ = 532759680.

The previous prime is 1220023393. The next prime is 1220023439. The reversal of 1220023402 is 2043200221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636798 + ... + 638710.

It is an arithmetic number, because the mean of its divisors is an integer number (64913310).

Almost surely, 2^1220023402 is an apocalyptic number.

1220023402 is a deficient number, since it is larger than the sum of its proper divisors (857202518).

1220023402 is a wasteful number, since it uses less digits than its factorization.

1220023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220023402 is about 34928.8333901950. The cubic root of 1220023402 is about 1068.5365622726.

Adding to 1220023402 its reverse (2043200221), we get a palindrome (3263223623).

The spelling of 1220023402 in words is "one billion, two hundred twenty million, twenty-three thousand, four hundred two".