42399325 has 12 divisors (see below), whose sum is σ = 52848180. Its totient is φ = 33743360.

The previous prime is 42399307. The next prime is 42399337. The reversal of 42399325 is 52399324.

It can be written as a sum of positive squares in 6 ways, for example, as 71289 + 42328036 = 267^2 + 6506^2 .

It is not a de Polignac number, because 42399325 - 2⁷ = 42399197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (4404015).

Almost surely, 2^42399325 is an apocalyptic number.

It is an amenable number.

42399325 is a deficient number, since it is larger than the sum of its proper divisors (10448855).

42399325 is a wasteful number, since it uses less digits than its factorization.

42399325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816 (or 8811 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 42399325 is about 6511.4764070831. The cubic root of 42399325 is about 348.7008298162.

Subtracting 42399325 from its reverse (52399324), we obtain a palindrome (9999999).

It can be divided in two parts, 42399 and 325, that added together give a palindrome (42724).

The spelling of 42399325 in words is "forty-two million, three hundred ninety-nine thousand, three hundred twenty-five".