112147421 has 2 divisors, whose sum is σ = 112147422. Its totient is φ = 112147420.

The previous prime is 112147393. The next prime is 112147447. The reversal of 112147421 is 124741211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69388900 + 42758521 = 8330^2 + 6539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112147421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112146421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56073710 + 56073711.

It is an arithmetic number, because the mean of its divisors is an integer number (56073711).

Almost surely, 2^112147421 is an apocalyptic number.

It is an amenable number.

112147421 is a deficient number, since it is larger than the sum of its proper divisors (1).

112147421 is an equidigital number, since it uses as much as digits as its factorization.

112147421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 23.

The square root of 112147421 is about 10589.9679414057. The cubic root of 112147421 is about 482.2398515286.

Adding to 112147421 its reverse (124741211), we get a palindrome (236888632).

The spelling of 112147421 in words is "one hundred twelve million, one hundred forty-seven thousand, four hundred twenty-one".