1140424021 has 8 divisors (see below), whose sum is σ = 1244376288. Its totient is φ = 1036518000.

The previous prime is 1140424009. The next prime is 1140424057. The reversal of 1140424021 is 1204240411.

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

It is a cyclic number.

It is not a de Polignac number, because 1140424021 - 2¹¹ = 1140421973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140424021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140494021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58491 + ... + 75511.

It is an arithmetic number, because the mean of its divisors is an integer number (155547036).

Almost surely, 2^1140424021 is an apocalyptic number.

1140424021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1140424021 is a deficient number, since it is larger than the sum of its proper divisors (103952267).

1140424021 is a wasteful number, since it uses less digits than its factorization.

1140424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1140424021 is about 33770.1646575790. The cubic root of 1140424021 is about 1044.7734285930.

Adding to 1140424021 its reverse (1204240411), we get a palindrome (2344664432).

The spelling of 1140424021 in words is "one billion, one hundred forty million, four hundred twenty-four thousand, twenty-one".