42444629 has 2 divisors, whose sum is σ = 42444630. Its totient is φ = 42444628.

The previous prime is 42444617. The next prime is 42444643. The reversal of 42444629 is 92644424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22819729 + 19624900 = 4777^2 + 4430^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444629 - 2¹⁶ = 42379093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42444029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222314 + 21222315.

It is an arithmetic number, because the mean of its divisors is an integer number (21222315).

Almost surely, 2^42444629 is an apocalyptic number.

It is an amenable number.

42444629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444629 is an equidigital number, since it uses as much as digits as its factorization.

42444629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 35.

The square root of 42444629 is about 6514.9542592408. The cubic root of 42444629 is about 348.8249821004.

The spelling of 42444629 in words is "forty-two million, four hundred forty-four thousand, six hundred twenty-nine".