42093997 has 8 divisors (see below), whose sum is σ = 46035360. Its totient is φ = 38171760.

The previous prime is 42093977. The next prime is 42094007. The reversal of 42093997 is 79939024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42093997 - 2²³ = 33705389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42093967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43 + ... + 9175.

It is an arithmetic number, because the mean of its divisors is an integer number (5754420).

Almost surely, 2^42093997 is an apocalyptic number.

It is an amenable number.

42093997 is a deficient number, since it is larger than the sum of its proper divisors (3941363).

42093997 is a wasteful number, since it uses less digits than its factorization.

42093997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9563.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 42093997 is about 6487.9886713835. The cubic root of 42093997 is about 347.8617856247.

The spelling of 42093997 in words is "forty-two million, ninety-three thousand, nine hundred ninety-seven".