1142220412 has 24 divisors (see below), whose sum is σ = 2152347120. Its totient is φ = 528403200.

The previous prime is 1142220403. The next prime is 1142220439. The reversal of 1142220412 is 2140222411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142220412.

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, 138339 + ... + 146362.

It is an arithmetic number, because the mean of its divisors is an integer number (89681130).

Almost surely, 2^1142220412 is an apocalyptic number.

It is an amenable number.

1142220412 is a deficient number, since it is larger than the sum of its proper divisors (1010126708).

1142220412 is a wasteful number, since it uses less digits than its factorization.

1142220412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284781 (or 284779 counting only the distinct ones).

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

The square root of 1142220412 is about 33796.7515006990. The cubic root of 1142220412 is about 1045.3217150073.

Adding to 1142220412 its reverse (2140222411), we get a palindrome (3282442823).

The spelling of 1142220412 in words is "one billion, one hundred forty-two million, two hundred twenty thousand, four hundred twelve".