42040629 has 12 divisors (see below), whose sum is σ = 61000576. Its totient is φ = 27900072.

The previous prime is 42040613. The next prime is 42040631. The reversal of 42040629 is 92604024.

42040629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42040629 - 2⁴ = 42040613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42040679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8467 + ... + 12480.

Almost surely, 2^42040629 is an apocalyptic number.

It is an amenable number.

42040629 is a deficient number, since it is larger than the sum of its proper divisors (18959947).

42040629 is a wasteful number, since it uses less digits than its factorization.

42040629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21176 (or 21173 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42040629 is about 6483.8745361088. The cubic root of 42040629 is about 347.7147136727.

The spelling of 42040629 in words is "forty-two million, forty thousand, six hundred twenty-nine".