42069331 has 4 divisors (see below), whose sum is σ = 42172600. Its totient is φ = 41966064.

The previous prime is 42069319. The next prime is 42069337. The reversal of 42069331 is 13396024.

42069331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42069331 - 2⁵ = 42069299 is a prime.

It is a super-2 number, since 2×42069331² = 3539657221575122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42069331.

It is not an unprimeable number, because it can be changed into a prime (42069337) 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 3 ways as a sum of consecutive naturals, for example, 51021 + ... + 51838.

It is an arithmetic number, because the mean of its divisors is an integer number (10543150).

Almost surely, 2^42069331 is an apocalyptic number.

42069331 is a deficient number, since it is larger than the sum of its proper divisors (103269).

42069331 is a wasteful number, since it uses less digits than its factorization.

42069331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103268.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 42069331 is about 6486.0874955554. The cubic root of 42069331 is about 347.7938263279.

It can be divided in two parts, 420 and 69331, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 42069331 in words is "forty-two million, sixty-nine thousand, three hundred thirty-one".