1143212042 has 12 divisors (see below), whose sum is σ = 1994788530. Its totient is φ = 489947976.

The previous prime is 1143212011. The next prime is 1143212069. The reversal of 1143212042 is 2402123411.

It can be written as a sum of positive squares in only one way, i.e., 686492401 + 456719641 = 26201^2 + 21371^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5832617 + ... + 5832812.

Almost surely, 2^1143212042 is an apocalyptic number.

1143212042 is a deficient number, since it is larger than the sum of its proper divisors (851576488).

1143212042 is a wasteful number, since it uses less digits than its factorization.

1143212042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11665445 (or 11665438 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1143212042 is about 33811.4188108101. The cubic root of 1143212042 is about 1045.6241296539.

Adding to 1143212042 its reverse (2402123411), we get a palindrome (3545335453).

The spelling of 1143212042 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, forty-two".