1142256356 has 6 divisors (see below), whose sum is σ = 1998948630. Its totient is φ = 571128176.

The previous prime is 1142256347. The next prime is 1142256359. The reversal of 1142256356 is 6536522411.

It can be written as a sum of positive squares in only one way, i.e., 1039030756 + 103225600 = 32234^2 + 10160^2 .

It is not an unprimeable number, because it can be changed into a prime (1142256359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142782041 + ... + 142782048.

It is an arithmetic number, because the mean of its divisors is an integer number (333158105).

Almost surely, 2^1142256356 is an apocalyptic number.

It is an amenable number.

1142256356 is a deficient number, since it is larger than the sum of its proper divisors (856692274).

1142256356 is a wasteful number, since it uses less digits than its factorization.

1142256356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285564093 (or 285564091 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 1142256356 is about 33797.2832635998. The cubic root of 1142256356 is about 1045.3326798057.

Adding to 1142256356 its reverse (6536522411), we get a palindrome (7678778767).

The spelling of 1142256356 in words is "one billion, one hundred forty-two million, two hundred fifty-six thousand, three hundred fifty-six".