1140636321 has 24 divisors (see below), whose sum is σ = 1827839520. Its totient is φ = 679574400.

The previous prime is 1140636313. The next prime is 1140636331. The reversal of 1140636321 is 1236360411.

1140636321 is a `hidden beast` number, since 1 + 1 + 4 + 0 + 636 + 3 + 21 = 666.

It is not a de Polignac number, because 1140636321 - 2³ = 1140636313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140636331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91800 + ... + 103481.

It is an arithmetic number, because the mean of its divisors is an integer number (76159980).

Almost surely, 2^1140636321 is an apocalyptic number.

1140636321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1140636321 is a deficient number, since it is larger than the sum of its proper divisors (687203199).

1140636321 is a wasteful number, since it uses less digits than its factorization.

1140636321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195357 (or 195354 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1140636321 is about 33773.3078184533. The cubic root of 1140636321 is about 1044.8382558363.

Adding to 1140636321 its reverse (1236360411), we get a palindrome (2376996732).

The spelling of 1140636321 in words is "one billion, one hundred forty million, six hundred thirty-six thousand, three hundred twenty-one".