42406052 has 12 divisors (see below), whose sum is σ = 79919196. Its totient is φ = 19572000.

The previous prime is 42406051. The next prime is 42406069. The reversal of 42406052 is 25060424.

It can be written as a sum of positive squares in 2 ways, for example, as 12222016 + 30184036 = 3496^2 + 5494^2 .

It is not an unprimeable number, because it can be changed into a prime (42406051) 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, 407699 + ... + 407802.

It is an arithmetic number, because the mean of its divisors is an integer number (6659933).

Almost surely, 2^42406052 is an apocalyptic number.

It is an amenable number.

42406052 is a deficient number, since it is larger than the sum of its proper divisors (37513144).

42406052 is a wasteful number, since it uses less digits than its factorization.

42406052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815518 (or 815516 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42406052 is about 6511.9929361141. The cubic root of 42406052 is about 348.7192702548.

Adding to 42406052 its reverse (25060424), we get a palindrome (67466476).

The spelling of 42406052 in words is "forty-two million, four hundred six thousand, fifty-two".