42505126 has 16 divisors (see below), whose sum is σ = 66866400. Its totient is φ = 20236608.

The previous prime is 42505121. The next prime is 42505157. The reversal of 42505126 is 62150524.

It is a self number, because there is not a number n which added to its sum of digits gives 42505126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 786 + ... + 9253.

It is an arithmetic number, because the mean of its divisors is an integer number (4179150).

Almost surely, 2^42505126 is an apocalyptic number.

42505126 is a deficient number, since it is larger than the sum of its proper divisors (24361274).

42505126 is a wasteful number, since it uses less digits than its factorization.

42505126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 42505126 is about 6519.5955396021. The cubic root of 42505126 is about 348.9906320094.

The spelling of 42505126 in words is "forty-two million, five hundred five thousand, one hundred twenty-six".