1142909885 has 16 divisors (see below), whose sum is σ = 1479870000. Its totient is φ = 842350080.

The previous prime is 1142909879. The next prime is 1142909927. The reversal of 1142909885 is 5889092411.

It can be written as a sum of positive squares in 8 ways, for example, as 16434916 + 1126474969 = 4054^2 + 33563^2 .

It is not a de Polignac number, because 1142909885 - 2¹² = 1142905789 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, 16991 + ... + 50739.

It is an arithmetic number, because the mean of its divisors is an integer number (92491875).

Almost surely, 2^1142909885 is an apocalyptic number.

It is an amenable number.

1142909885 is a deficient number, since it is larger than the sum of its proper divisors (336960115).

1142909885 is a wasteful number, since it uses less digits than its factorization.

1142909885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34288.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 1142909885 is about 33806.9502469537. The cubic root of 1142909885 is about 1045.5320002041.

The spelling of 1142909885 in words is "one billion, one hundred forty-two million, nine hundred nine thousand, eight hundred eighty-five".