1142585805 has 32 divisors (see below), whose sum is σ = 1926714240. Its totient is φ = 576599040.

The previous prime is 1142585803. The next prime is 1142585833. The reversal of 1142585805 is 5085852411.

It is not a de Polignac number, because 1142585805 - 2¹ = 1142585803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142585803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292465 + ... + 296345.

It is an arithmetic number, because the mean of its divisors is an integer number (60209820).

Almost surely, 2^1142585805 is an apocalyptic number.

1142585805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142585805 is a deficient number, since it is larger than the sum of its proper divisors (784128435).

1142585805 is a wasteful number, since it uses less digits than its factorization.

1142585805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941.

The product of its (nonzero) digits is 64000, while the sum is 39.

The square root of 1142585805 is about 33802.1568098842. The cubic root of 1142585805 is about 1045.4331682528.

The spelling of 1142585805 in words is "one billion, one hundred forty-two million, five hundred eighty-five thousand, eight hundred five".