42367121 has 2 divisors, whose sum is σ = 42367122. Its totient is φ = 42367120.

The previous prime is 42367097. The next prime is 42367139. The reversal of 42367121 is 12176324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34386496 + 7980625 = 5864^2 + 2825^2 .

It is a cyclic number.

It is not a de Polignac number, because 42367121 - 2¹⁰ = 42366097 is a prime.

It is not a weakly prime, because it can be changed into another prime (42367151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21183560 + 21183561.

It is an arithmetic number, because the mean of its divisors is an integer number (21183561).

Almost surely, 2^42367121 is an apocalyptic number.

It is an amenable number.

42367121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42367121 is an equidigital number, since it uses as much as digits as its factorization.

42367121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 42367121 is about 6509.0030726679. The cubic root of 42367121 is about 348.6125233332.

The spelling of 42367121 in words is "forty-two million, three hundred sixty-seven thousand, one hundred twenty-one".