42700538 has 8 divisors (see below), whose sum is σ = 64376532. Its totient is φ = 21241696.

The previous prime is 42700531. The next prime is 42700561. The reversal of 42700538 is 83500724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42680089 + 20449 = 6533^2 + 143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42700538.

It is not an unprimeable number, because it can be changed into a prime (42700531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53795 + ... + 54582.

Almost surely, 2^42700538 is an apocalyptic number.

42700538 is a deficient number, since it is larger than the sum of its proper divisors (21675994).

42700538 is a wasteful number, since it uses less digits than its factorization.

42700538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108576.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42700538 is about 6534.5648669211. The cubic root of 42700538 is about 349.5246281090.

The spelling of 42700538 in words is "forty-two million, seven hundred thousand, five hundred thirty-eight".