42508697 has 16 divisors (see below), whose sum is σ = 53215872. Its totient is φ = 32987520.

The previous prime is 42508673. The next prime is 42508717. The reversal of 42508697 is 79680524.

It is a cyclic number.

It is not a de Polignac number, because 42508697 - 2⁸ = 42508441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42508637) 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, 20333 + ... + 22325.

It is an arithmetic number, because the mean of its divisors is an integer number (3325992).

Almost surely, 2^42508697 is an apocalyptic number.

It is an amenable number.

42508697 is a deficient number, since it is larger than the sum of its proper divisors (10707175).

42508697 is a wasteful number, since it uses less digits than its factorization.

42508697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 42508697 is about 6519.8694005325. The cubic root of 42508697 is about 349.0004050318. Note that the first 3 decimals are identical.

The spelling of 42508697 in words is "forty-two million, five hundred eight thousand, six hundred ninety-seven".