42755207 has 4 divisors (see below), whose sum is σ = 46642056. Its totient is φ = 38868360.

The previous prime is 42755203. The next prime is 42755233. The reversal of 42755207 is 70255724.

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

It is a cyclic number.

It is not a de Polignac number, because 42755207 - 2² = 42755203 is a prime.

It is a super-2 number, since 2×42755207² = 3656015451225698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42755203) 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 3 ways as a sum of consecutive naturals, for example, 1943408 + ... + 1943429.

It is an arithmetic number, because the mean of its divisors is an integer number (11660514).

Almost surely, 2^42755207 is an apocalyptic number.

42755207 is a deficient number, since it is larger than the sum of its proper divisors (3886849).

42755207 is a wasteful number, since it uses less digits than its factorization.

42755207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886848.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 42755207 is about 6538.7465924289. The cubic root of 42755207 is about 349.6737285961.

The spelling of 42755207 in words is "forty-two million, seven hundred fifty-five thousand, two hundred seven".