42335869 has 2 divisors, whose sum is σ = 42335870. Its totient is φ = 42335868.

The previous prime is 42335771. The next prime is 42335879. The reversal of 42335869 is 96853324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29648025 + 12687844 = 5445^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 42335869 - 2²¹ = 40238717 is a prime.

It is a super-2 number, since 2×42335869² = 3584651607970322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42335879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21167934 + 21167935.

It is an arithmetic number, because the mean of its divisors is an integer number (21167935).

Almost surely, 2^42335869 is an apocalyptic number.

It is an amenable number.

42335869 is a deficient number, since it is larger than the sum of its proper divisors (1).

42335869 is an equidigital number, since it uses as much as digits as its factorization.

42335869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 42335869 is about 6506.6019549378. The cubic root of 42335869 is about 348.5267845317.

The spelling of 42335869 in words is "forty-two million, three hundred thirty-five thousand, eight hundred sixty-nine".