42069312 has 42 divisors (see below), whose sum is σ = 120585738. Its totient is φ = 14022912.

The previous prime is 42069299. The next prime is 42069319. The reversal of 42069312 is 21396024.

It can be written as a sum of positive squares in only one way, i.e., 41679936 + 389376 = 6456^2 + 624^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42069319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35943 + ... + 37094.

It is an arithmetic number, because the mean of its divisors is an integer number (2871089).

Almost surely, 2^42069312 is an apocalyptic number.

It is an amenable number.

42069312 is an abundant number, since it is smaller than the sum of its proper divisors (78516426).

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

42069312 is a wasteful number, since it uses less digits than its factorization.

42069312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73055 (or 73042 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 42069312 is about 6486.0860308818. The cubic root of 42069312 is about 347.7937739692.

The spelling of 42069312 in words is "forty-two million, sixty-nine thousand, three hundred twelve".