1290140168 has 32 divisors (see below), whose sum is σ = 2522188800. Its totient is φ = 617908032.

The previous prime is 1290140123. The next prime is 1290140221. The reversal of 1290140168 is 8610410921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7571 + ... + 51357.

It is an arithmetic number, because the mean of its divisors is an integer number (78818400).

Almost surely, 2^1290140168 is an apocalyptic number.

It is an amenable number.

1290140168 is a deficient number, since it is larger than the sum of its proper divisors (1232048632).

1290140168 is a wasteful number, since it uses less digits than its factorization.

1290140168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43949 (or 43945 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1290140168 is about 35918.5212390488. The cubic root of 1290140168 is about 1088.6266596982.

The spelling of 1290140168 in words is "one billion, two hundred ninety million, one hundred forty thousand, one hundred sixty-eight".