1142136605 has 16 divisors (see below), whose sum is σ = 1392585600. Its totient is φ = 899059392.

The previous prime is 1142136581. The next prime is 1142136617. The reversal of 1142136605 is 5066312411.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142136605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467447 + ... + 469883.

It is an arithmetic number, because the mean of its divisors is an integer number (87036600).

Almost surely, 2^1142136605 is an apocalyptic number.

It is an amenable number.

1142136605 is a deficient number, since it is larger than the sum of its proper divisors (250448995).

1142136605 is a wasteful number, since it uses less digits than its factorization.

1142136605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1142136605 is about 33795.5116102716. The cubic root of 1142136605 is about 1045.2961485992.

The spelling of 1142136605 in words is "one billion, one hundred forty-two million, one hundred thirty-six thousand, six hundred five".