42420325 has 12 divisors (see below), whose sum is σ = 52691940. Its totient is φ = 33877760.

The previous prime is 42420311. The next prime is 42420377. The reversal of 42420325 is 52302424.

It can be written as a sum of positive squares in 6 ways, for example, as 3207681 + 39212644 = 1791^2 + 6262^2 .

It is not a de Polignac number, because 42420325 - 2¹³ = 42412133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42420296 and 42420305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18861 + ... + 20989.

It is an arithmetic number, because the mean of its divisors is an integer number (4390995).

Almost surely, 2^42420325 is an apocalyptic number.

It is an amenable number.

42420325 is a deficient number, since it is larger than the sum of its proper divisors (10271615).

42420325 is a wasteful number, since it uses less digits than its factorization.

42420325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42420325 is about 6513.0887449811. The cubic root of 42420325 is about 348.7583897640.

Adding to 42420325 its reverse (52302424), we get a palindrome (94722749).

The spelling of 42420325 in words is "forty-two million, four hundred twenty thousand, three hundred twenty-five".