1142551859 has 2 divisors, whose sum is σ = 1142551860. Its totient is φ = 1142551858.

The previous prime is 1142551853. The next prime is 1142551939. The reversal of 1142551859 is 9581552411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142551859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142551853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571275929 + 571275930.

It is an arithmetic number, because the mean of its divisors is an integer number (571275930).

Almost surely, 2^1142551859 is an apocalyptic number.

1142551859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142551859 is an equidigital number, since it uses as much as digits as its factorization.

1142551859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 41.

The square root of 1142551859 is about 33801.6546784325. The cubic root of 1142551859 is about 1045.4228149455.

The spelling of 1142551859 in words is "one billion, one hundred forty-two million, five hundred fifty-one thousand, eight hundred fifty-nine".