42700845 has 32 divisors (see below), whose sum is σ = 75116160. Its totient is φ = 20541440.

The previous prime is 42700841. The next prime is 42700871. The reversal of 42700845 is 54800724.

It is not a de Polignac number, because 42700845 - 2² = 42700841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42700841) 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 31 ways as a sum of consecutive naturals, for example, 21661 + ... + 23549.

It is an arithmetic number, because the mean of its divisors is an integer number (2347380).

Almost surely, 2^42700845 is an apocalyptic number.

It is an amenable number.

42700845 is a deficient number, since it is larger than the sum of its proper divisors (32415315).

42700845 is a wasteful number, since it uses less digits than its factorization.

42700845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42700845 is about 6534.5883573489. The cubic root of 42700845 is about 349.5254657550.

The spelling of 42700845 in words is "forty-two million, seven hundred thousand, eight hundred forty-five".