1140424421 has 4 divisors (see below), whose sum is σ = 1143870144. Its totient is φ = 1136978700.

The previous prime is 1140424361. The next prime is 1140424427. The reversal of 1140424421 is 1244240411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1244240411 = 11909 ⋅104479.

It is a cyclic number.

It is not a de Polignac number, because 1140424421 - 2⁶ = 1140424357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140424427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722365 + ... + 1723026.

It is an arithmetic number, because the mean of its divisors is an integer number (285967536).

Almost surely, 2^1140424421 is an apocalyptic number.

It is an amenable number.

1140424421 is a deficient number, since it is larger than the sum of its proper divisors (3445723).

1140424421 is an equidigital number, since it uses as much as digits as its factorization.

1140424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445722.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1140424421 is about 33770.1705799660. The cubic root of 1140424421 is about 1044.7735507432.

Adding to 1140424421 its reverse (1244240411), we get a palindrome (2384664832).

The spelling of 1140424421 in words is "one billion, one hundred forty million, four hundred twenty-four thousand, four hundred twenty-one".