42042197 has 8 divisors (see below), whose sum is σ = 43002144. Its totient is φ = 41088528.

The previous prime is 42042191. The next prime is 42042211. The reversal of 42042197 is 79124024.

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

It is a cyclic number.

It is not a de Polignac number, because 42042197 - 2¹⁰ = 42041173 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 (42042191) 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, 13598 + ... + 16400.

It is an arithmetic number, because the mean of its divisors is an integer number (5375268).

Almost surely, 2^42042197 is an apocalyptic number.

It is an amenable number.

42042197 is a deficient number, since it is larger than the sum of its proper divisors (959947).

42042197 is a wasteful number, since it uses less digits than its factorization.

42042197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42042197 is about 6483.9954503377. The cubic root of 42042197 is about 347.7190365535.

The spelling of 42042197 in words is "forty-two million, forty-two thousand, one hundred ninety-seven".