1220412142 has 16 divisors (see below), whose sum is σ = 1931844240. Its totient is φ = 576626688.

The previous prime is 1220412139. The next prime is 1220412203. The reversal of 1220412142 is 2412140221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25363 + ... + 55534.

It is an arithmetic number, because the mean of its divisors is an integer number (120740265).

Almost surely, 2^1220412142 is an apocalyptic number.

1220412142 is a deficient number, since it is larger than the sum of its proper divisors (711432098).

1220412142 is a wasteful number, since it uses less digits than its factorization.

1220412142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81315.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1220412142 is about 34934.3976905285. The cubic root of 1220412142 is about 1068.6500406403.

Adding to 1220412142 its reverse (2412140221), we get a palindrome (3632552363).

The spelling of 1220412142 in words is "one billion, two hundred twenty million, four hundred twelve thousand, one hundred forty-two".