1140432021 has 8 divisors (see below), whose sum is σ = 1689528960. Its totient is φ = 760287996.

The previous prime is 1140431993. The next prime is 1140432043. The reversal of 1140432021 is 1202340411.

It is not a de Polignac number, because 1140432021 - 2¹⁴ = 1140415637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1140431985 and 1140432003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140432121) 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 7 ways as a sum of consecutive naturals, for example, 21119085 + ... + 21119138.

It is an arithmetic number, because the mean of its divisors is an integer number (211191120).

Almost surely, 2^1140432021 is an apocalyptic number.

It is an amenable number.

1140432021 is a deficient number, since it is larger than the sum of its proper divisors (549096939).

1140432021 is an equidigital number, since it uses as much as digits as its factorization.

1140432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42238232 (or 42238226 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1140432021 is about 33770.2831051207. The cubic root of 1140432021 is about 1044.7758715930.

Adding to 1140432021 its reverse (1202340411), we get a palindrome (2342772432).

The spelling of 1140432021 in words is "one billion, one hundred forty million, four hundred thirty-two thousand, twenty-one".