42169812 has 24 divisors (see below), whose sum is σ = 100797312. Its totient is φ = 13713600.

The previous prime is 42169807. The next prime is 42169819. The reversal of 42169812 is 21896124.

42169812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42169819) 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 7 ways as a sum of consecutive naturals, for example, 42364 + ... + 43347.

It is an arithmetic number, because the mean of its divisors is an integer number (4199888).

Almost surely, 2^42169812 is an apocalyptic number.

It is an amenable number.

42169812 is an abundant number, since it is smaller than the sum of its proper divisors (58627500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42169812 is a wasteful number, since it uses less digits than its factorization.

42169812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85759 (or 85757 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 42169812 is about 6493.8287627562. The cubic root of 42169812 is about 348.0705036172.

It can be divided in two parts, 4216 and 9812, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 42169812 in words is "forty-two million, one hundred sixty-nine thousand, eight hundred twelve".