1140066521 has 8 divisors (see below), whose sum is σ = 1255785024. Its totient is φ = 1026360720.

The previous prime is 1140066493. The next prime is 1140066523. The reversal of 1140066521 is 1256600411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1140066521 - 2¹⁴ = 1140050137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140066523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501986 + ... + 504251.

It is an arithmetic number, because the mean of its divisors is an integer number (156973128).

Almost surely, 2^1140066521 is an apocalyptic number.

1140066521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1140066521 is a deficient number, since it is larger than the sum of its proper divisors (115718503).

1140066521 is a wasteful number, since it uses less digits than its factorization.

1140066521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006351.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1140066521 is about 33764.8711088907. The cubic root of 1140066521 is about 1044.6642453624.

Adding to 1140066521 its reverse (1256600411), we get a palindrome (2396666932).

The spelling of 1140066521 in words is "one billion, one hundred forty million, sixty-six thousand, five hundred twenty-one".