42783530 has 8 divisors (see below), whose sum is σ = 77010372. Its totient is φ = 17113408.

The previous prime is 42783527. The next prime is 42783539. The reversal of 42783530 is 3538724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41075281 + 1708249 = 6409^2 + 1307^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42783539) 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, 2139167 + ... + 2139186.

Almost surely, 2^42783530 is an apocalyptic number.

42783530 is a deficient number, since it is larger than the sum of its proper divisors (34226842).

42783530 is a wasteful number, since it uses less digits than its factorization.

42783530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278360.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 42783530 is about 6540.9120159195. The cubic root of 42783530 is about 349.7509248302.

The spelling of 42783530 in words is "forty-two million, seven hundred eighty-three thousand, five hundred thirty".