42532397 has 4 divisors (see below), whose sum is σ = 42690780. Its totient is φ = 42374016.

The previous prime is 42532379. The next prime is 42532411. The reversal of 42532397 is 79323524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17422276 + 25110121 = 4174^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 42532397 - 2⁸ = 42532141 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 (42532327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78788 + ... + 79325.

It is an arithmetic number, because the mean of its divisors is an integer number (10672695).

Almost surely, 2^42532397 is an apocalyptic number.

It is an amenable number.

42532397 is a deficient number, since it is larger than the sum of its proper divisors (158383).

42532397 is a wasteful number, since it uses less digits than its factorization.

42532397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158382.

The product of its digits is 45360, while the sum is 35.

The square root of 42532397 is about 6521.6866683397. The cubic root of 42532397 is about 349.0652527256.

The spelling of 42532397 in words is "forty-two million, five hundred thirty-two thousand, three hundred ninety-seven".