42513755 has 4 divisors (see below), whose sum is σ = 51016512. Its totient is φ = 34011000.

The previous prime is 42513733. The next prime is 42513769. The reversal of 42513755 is 55731524.

42513755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42513755 - 2²² = 38319451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4251371 + ... + 4251380.

It is an arithmetic number, because the mean of its divisors is an integer number (12754128).

Almost surely, 2^42513755 is an apocalyptic number.

42513755 is a deficient number, since it is larger than the sum of its proper divisors (8502757).

42513755 is an equidigital number, since it uses as much as digits as its factorization.

42513755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502756.

The product of its digits is 21000, while the sum is 32.

The square root of 42513755 is about 6520.2572801999. The cubic root of 42513755 is about 349.0142467016.

The spelling of 42513755 in words is "forty-two million, five hundred thirteen thousand, seven hundred fifty-five".