1142221316 has 12 divisors (see below), whose sum is σ = 1999668300. Its totient is φ = 570887520.

The previous prime is 1142221303. The next prime is 1142221373. The reversal of 1142221316 is 6131222411.

It can be written as a sum of positive squares in 2 ways, for example, as 1078859716 + 63361600 = 32846^2 + 7960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1142221291 and 1142221300.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43991 + ... + 64958.

It is an arithmetic number, because the mean of its divisors is an integer number (166639025).

Almost surely, 2^1142221316 is an apocalyptic number.

It is an amenable number.

1142221316 is a deficient number, since it is larger than the sum of its proper divisors (857446984).

1142221316 is a wasteful number, since it uses less digits than its factorization.

1142221316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111574 (or 111572 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1142221316 is about 33796.7648747628. The cubic root of 1142221316 is about 1045.3219907773.

Adding to 1142221316 its reverse (6131222411), we get a palindrome (7273443727).

The spelling of 1142221316 in words is "one billion, one hundred forty-two million, two hundred twenty-one thousand, three hundred sixteen".