42697593 has 12 divisors (see below), whose sum is σ = 63341668. Its totient is φ = 27695520.

The previous prime is 42697561. The next prime is 42697597. The reversal of 42697593 is 39579624.

It is a happy number.

42697593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30503529 + 12194064 = 5523^2 + 3492^2 .

It is not a de Polignac number, because 42697593 - 2⁵ = 42697561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42697597) 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 11 ways as a sum of consecutive naturals, for example, 63778 + ... + 64443.

Almost surely, 2^42697593 is an apocalyptic number.

It is an amenable number.

42697593 is a deficient number, since it is larger than the sum of its proper divisors (20644075).

42697593 is a wasteful number, since it uses less digits than its factorization.

42697593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128264 (or 128261 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 42697593 is about 6534.3395228592. The cubic root of 42697593 is about 349.5165925062.

The spelling of 42697593 in words is "forty-two million, six hundred ninety-seven thousand, five hundred ninety-three".