42212629 has 2 divisors, whose sum is σ = 42212630. Its totient is φ = 42212628.

The previous prime is 42212617. The next prime is 42212689. The reversal of 42212629 is 92621224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 8398404 = 5815^2 + 2898^2 .

It is a cyclic number.

It is not a de Polignac number, because 42212629 - 2⁷ = 42212501 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42212597 and 42212606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42212609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106314 + 21106315.

It is an arithmetic number, because the mean of its divisors is an integer number (21106315).

Almost surely, 2^42212629 is an apocalyptic number.

It is an amenable number.

42212629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212629 is an equidigital number, since it uses as much as digits as its factorization.

42212629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 42212629 is about 6497.1246717298. The cubic root of 42212629 is about 348.1882679046.

The spelling of 42212629 in words is "forty-two million, two hundred twelve thousand, six hundred twenty-nine".