42542397 has 12 divisors (see below), whose sum is σ = 62191584. Its totient is φ = 28019400.

The previous prime is 42542377. The next prime is 42542417. The reversal of 42542397 is 79324524.

It is an interprime number because it is at equal distance from previous prime (42542377) and next prime (42542417).

It is not a de Polignac number, because 42542397 - 2⁸ = 42542141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27729 + ... + 29222.

It is an arithmetic number, because the mean of its divisors is an integer number (5182632).

Almost surely, 2^42542397 is an apocalyptic number.

It is an amenable number.

42542397 is a deficient number, since it is larger than the sum of its proper divisors (19649187).

42542397 is a wasteful number, since it uses less digits than its factorization.

42542397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57040 (or 57037 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 42542397 is about 6522.4532961149. The cubic root of 42542397 is about 349.0926073951.

The spelling of 42542397 in words is "forty-two million, five hundred forty-two thousand, three hundred ninety-seven".