1140811421 has 2 divisors, whose sum is σ = 1140811422. Its totient is φ = 1140811420.

The previous prime is 1140811391. The next prime is 1140811453. The reversal of 1140811421 is 1241180411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887205796 + 253605625 = 29786^2 + 15925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140811421 - 2¹⁰ = 1140810397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140801421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570405710 + 570405711.

It is an arithmetic number, because the mean of its divisors is an integer number (570405711).

Almost surely, 2^1140811421 is an apocalyptic number.

It is an amenable number.

1140811421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140811421 is an equidigital number, since it uses as much as digits as its factorization.

1140811421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 1140811421 is about 33775.9000028127. The cubic root of 1140811421 is about 1044.8917177547.

Adding to 1140811421 its reverse (1241180411), we get a palindrome (2381991832).

The spelling of 1140811421 in words is "one billion, one hundred forty million, eight hundred eleven thousand, four hundred twenty-one".