42719629 has 2 divisors, whose sum is σ = 42719630. Its totient is φ = 42719628.

The previous prime is 42719617. The next prime is 42719687. The reversal of 42719629 is 92691724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 19342404 = 4835^2 + 4398^2 .

It is a cyclic number.

It is not a de Polignac number, because 42719629 - 2¹¹ = 42717581 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42719591 and 42719600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42719609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21359814 + 21359815.

It is an arithmetic number, because the mean of its divisors is an integer number (21359815).

Almost surely, 2^42719629 is an apocalyptic number.

It is an amenable number.

42719629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42719629 is an equidigital number, since it uses as much as digits as its factorization.

42719629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 42719629 is about 6536.0254742466. The cubic root of 42719629 is about 349.5767100483.

The spelling of 42719629 in words is "forty-two million, seven hundred nineteen thousand, six hundred twenty-nine".