42166629 has 8 divisors (see below), whose sum is σ = 62469120. Its totient is φ = 28111068.

The previous prime is 42166627. The next prime is 42166669. The reversal of 42166629 is 92666124.

It is not a de Polignac number, because 42166629 - 2¹ = 42166627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42166593 and 42166602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780837 + ... + 780890.

It is an arithmetic number, because the mean of its divisors is an integer number (7808640).

Almost surely, 2^42166629 is an apocalyptic number.

It is an amenable number.

42166629 is a deficient number, since it is larger than the sum of its proper divisors (20302491).

42166629 is a wasteful number, since it uses less digits than its factorization.

42166629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561736 (or 1561730 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 42166629 is about 6493.5836792945. The cubic root of 42166629 is about 348.0617458808.

The spelling of 42166629 in words is "forty-two million, one hundred sixty-six thousand, six hundred twenty-nine".