42065629 has 2 divisors, whose sum is σ = 42065630. Its totient is φ = 42065628.

The previous prime is 42065603. The next prime is 42065651. The reversal of 42065629 is 92656024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 10404 = 6485^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 42065629 - 2⁷ = 42065501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42065594 and 42065603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42065669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21032814 + 21032815.

It is an arithmetic number, because the mean of its divisors is an integer number (21032815).

Almost surely, 2^42065629 is an apocalyptic number.

It is an amenable number.

42065629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42065629 is an equidigital number, since it uses as much as digits as its factorization.

42065629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 42065629 is about 6485.8021092229. The cubic root of 42065629 is about 347.7836243551.

It can be divided in two parts, 420 and 65629, that added together give a square (66049 = 257²).

The spelling of 42065629 in words is "forty-two million, sixty-five thousand, six hundred twenty-nine".