42429885 has 16 divisors (see below), whose sum is σ = 68513280. Its totient is φ = 22420800.

The previous prime is 42429883. The next prime is 42429899. The reversal of 42429885 is 58892424.

It is not a de Polignac number, because 42429885 - 2¹ = 42429883 is a prime.

It is a super-2 number, since 2×42429885² = 3600590282226450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42429883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11341 + ... + 14610.

It is an arithmetic number, because the mean of its divisors is an integer number (4282080).

Almost surely, 2^42429885 is an apocalyptic number.

It is an amenable number.

42429885 is a deficient number, since it is larger than the sum of its proper divisors (26083395).

42429885 is a wasteful number, since it uses less digits than its factorization.

42429885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26068.

The product of its digits is 184320, while the sum is 42.

The square root of 42429885 is about 6513.8226104186. The cubic root of 42429885 is about 348.7845869527.

The spelling of 42429885 in words is "forty-two million, four hundred twenty-nine thousand, eight hundred eighty-five".