1111420841 has 2 divisors, whose sum is σ = 1111420842. Its totient is φ = 1111420840.

The previous prime is 1111420831. The next prime is 1111420861. The reversal of 1111420841 is 1480241111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 898260841 + 213160000 = 29971^2 + 14600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111420841 - 2⁶ = 1111420777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1111420811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555710420 + 555710421.

It is an arithmetic number, because the mean of its divisors is an integer number (555710421).

Almost surely, 2^1111420841 is an apocalyptic number.

It is an amenable number.

1111420841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111420841 is an equidigital number, since it uses as much as digits as its factorization.

1111420841 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 1111420841 is about 33337.9789579392. The cubic root of 1111420841 is about 1035.8403999880.

Adding to 1111420841 its reverse (1480241111), we get a palindrome (2591661952).

The spelling of 1111420841 in words is "one billion, one hundred eleven million, four hundred twenty thousand, eight hundred forty-one".