42339825 has 36 divisors (see below), whose sum is σ = 82734288. Its totient is φ = 20527200.

The previous prime is 42339811. The next prime is 42339827. The reversal of 42339825 is 52893324.

It is not a de Polignac number, because 42339825 - 2⁸ = 42339569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42339825.

It is not an unprimeable number, because it can be changed into a prime (42339827) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6079 + ... + 11028.

Almost surely, 2^42339825 is an apocalyptic number.

42339825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42339825 is a deficient number, since it is larger than the sum of its proper divisors (40394463).

42339825 is a wasteful number, since it uses less digits than its factorization.

42339825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17134 (or 17126 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 42339825 is about 6506.9059467615. The cubic root of 42339825 is about 348.5376400155.

The spelling of 42339825 in words is "forty-two million, three hundred thirty-nine thousand, eight hundred twenty-five".