1142261156 has 24 divisors (see below), whose sum is σ = 2012283000. Its totient is φ = 567336704.

The previous prime is 1142261143. The next prime is 1142261177. The reversal of 1142261156 is 6511622411.

It can be written as a sum of positive squares in 4 ways, for example, as 91853056 + 1050408100 = 9584^2 + 32410^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417200 + ... + 419928.

It is an arithmetic number, because the mean of its divisors is an integer number (83845125).

Almost surely, 2^1142261156 is an apocalyptic number.

It is an amenable number.

1142261156 is a deficient number, since it is larger than the sum of its proper divisors (870021844).

1142261156 is a wasteful number, since it uses less digits than its factorization.

1142261156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3389 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1142261156 is about 33797.3542751500. The cubic root of 1142261156 is about 1045.3341440391.

Adding to 1142261156 its reverse (6511622411), we get a palindrome (7653883567).

The spelling of 1142261156 in words is "one billion, one hundred forty-two million, two hundred sixty-one thousand, one hundred fifty-six".