42071393 has 16 divisors (see below), whose sum is σ = 54034176. Its totient is φ = 31838400.

The previous prime is 42071389. The next prime is 42071399. The reversal of 42071393 is 39317024.

It is a cyclic number.

It is not a de Polignac number, because 42071393 - 2² = 42071389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42071399) 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, 7958 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (3377136).

Almost surely, 2^42071393 is an apocalyptic number.

It is an amenable number.

42071393 is a deficient number, since it is larger than the sum of its proper divisors (11962783).

42071393 is a wasteful number, since it uses less digits than its factorization.

42071393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20144.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 42071393 is about 6486.2464492185. The cubic root of 42071393 is about 347.7995085287.

The spelling of 42071393 in words is "forty-two million, seventy-one thousand, three hundred ninety-three".