42069813 has 16 divisors (see below), whose sum is σ = 57769152. Its totient is φ = 27216000.

The previous prime is 42069803. The next prime is 42069913. The reversal of 42069813 is 31896024.

It is not a de Polignac number, because 42069813 - 2⁸ = 42069557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42069803) 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, 25143 + ... + 26763.

It is an arithmetic number, because the mean of its divisors is an integer number (3610572).

Almost surely, 2^42069813 is an apocalyptic number.

It is an amenable number.

42069813 is a deficient number, since it is larger than the sum of its proper divisors (15699339).

42069813 is a wasteful number, since it uses less digits than its factorization.

42069813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 42069813 is about 6486.1246519012. The cubic root of 42069813 is about 347.7951545796.

The spelling of 42069813 in words is "forty-two million, sixty-nine thousand, eight hundred thirteen".