1134440421 has 4 divisors (see below), whose sum is σ = 1512587232. Its totient is φ = 756293612.

The previous prime is 1134440401. The next prime is 1134440423. The reversal of 1134440421 is 1240444311.

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: 1240444311 = 3 ⋅413481437.

It is a cyclic number.

It is not a de Polignac number, because 1134440421 - 2⁵ = 1134440389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1134440391 and 1134440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1134440423) 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, 189073401 + ... + 189073406.

It is an arithmetic number, because the mean of its divisors is an integer number (378146808).

Almost surely, 2^1134440421 is an apocalyptic number.

It is an amenable number.

1134440421 is a deficient number, since it is larger than the sum of its proper divisors (378146811).

1134440421 is an equidigital number, since it uses as much as digits as its factorization.

1134440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378146810.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1134440421 is about 33681.4551496814. The cubic root of 1134440421 is about 1042.9429773268.

Adding to 1134440421 its reverse (1240444311), we get a palindrome (2374884732).

The spelling of 1134440421 in words is "one billion, one hundred thirty-four million, four hundred forty thousand, four hundred twenty-one".