42004197 has 8 divisors (see below), whose sum is σ = 62228480. Its totient is φ = 28002780.

The previous prime is 42004177. The next prime is 42004211. The reversal of 42004197 is 79140024.

It is a happy number.

42004197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42004197 - 2⁷ = 42004069 is a prime.

It is a super-2 number, since 2×42004197² = 3528705131229618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1555711 = 42004197 / (4 + 2 + 0 + 0 + 4 + 1 + 9 + 7).

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 42004197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004177) 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 7 ways as a sum of consecutive naturals, for example, 777829 + ... + 777882.

It is an arithmetic number, because the mean of its divisors is an integer number (7778560).

Almost surely, 2^42004197 is an apocalyptic number.

It is an amenable number.

42004197 is a deficient number, since it is larger than the sum of its proper divisors (20224283).

42004197 is a wasteful number, since it uses less digits than its factorization.

42004197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555720 (or 1555714 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42004197 is about 6481.0644958988. The cubic root of 42004197 is about 347.6142425822.

The spelling of 42004197 in words is "forty-two million, four thousand, one hundred ninety-seven".