1213224142 has 32 divisors (see below), whose sum is σ = 2091543552. Its totient is φ = 522837504.

The previous prime is 1213224053. The next prime is 1213224167. The reversal of 1213224142 is 2414223121.

It is a congruent number.

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, 45328 + ... + 66940.

It is an arithmetic number, because the mean of its divisors is an integer number (65360736).

Almost surely, 2^1213224142 is an apocalyptic number.

1213224142 is a deficient number, since it is larger than the sum of its proper divisors (878319410).

1213224142 is a wasteful number, since it uses less digits than its factorization.

1213224142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21772.

The product of its digits is 768, while the sum is 22.

The square root of 1213224142 is about 34831.3672140500. The cubic root of 1213224142 is about 1066.5478582299.

Adding to 1213224142 its reverse (2414223121), we get a palindrome (3627447263).

The spelling of 1213224142 in words is "one billion, two hundred thirteen million, two hundred twenty-four thousand, one hundred forty-two".