42656953 has 4 divisors (see below), whose sum is σ = 42895440. Its totient is φ = 42418468.

The previous prime is 42656951. The next prime is 42656969. The reversal of 42656953 is 35965624.

42656953 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42656953 - 2¹ = 42656951 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42656951) by changing a digit.

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, 118975 + ... + 119332.

It is an arithmetic number, because the mean of its divisors is an integer number (10723860).

Almost surely, 2^42656953 is an apocalyptic number.

It is an amenable number.

42656953 is a deficient number, since it is larger than the sum of its proper divisors (238487).

42656953 is a wasteful number, since it uses less digits than its factorization.

42656953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238486.

The product of its digits is 194400, while the sum is 40.

The square root of 42656953 is about 6531.2290573827. The cubic root of 42656953 is about 349.4056661649.

The spelling of 42656953 in words is "forty-two million, six hundred fifty-six thousand, nine hundred fifty-three".