1106542421 has 2 divisors, whose sum is σ = 1106542422. Its totient is φ = 1106542420.

The previous prime is 1106542403. The next prime is 1106542439. The reversal of 1106542421 is 1242456011.

It is a balanced prime because it is at equal distance from previous prime (1106542403) and next prime (1106542439).

It can be written as a sum of positive squares in only one way, i.e., 999192100 + 107350321 = 31610^2 + 10361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1106542421 is a prime.

It is a super-2 number, since 2×1106542421² = 2448872258945082482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1106542441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553271210 + 553271211.

It is an arithmetic number, because the mean of its divisors is an integer number (553271211).

Almost surely, 2^1106542421 is an apocalyptic number.

It is an amenable number.

1106542421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1106542421 is an equidigital number, since it uses as much as digits as its factorization.

1106542421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1106542421 is about 33264.7323903259. The cubic root of 1106542421 is about 1034.3226202408.

Adding to 1106542421 its reverse (1242456011), we get a palindrome (2348998432).

The spelling of 1106542421 in words is "one billion, one hundred six million, five hundred forty-two thousand, four hundred twenty-one".