42793530 has 64 divisors (see below), whose sum is σ = 111404160. Its totient is φ = 10457856.

The previous prime is 42793523. The next prime is 42793537. The reversal of 42793530 is 3539724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42793523) and next prime (42793537).

It is a junction number, because it is equal to n+sod(n) for n = 42793491 and 42793500.

It is not an unprimeable number, because it can be changed into a prime (42793537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69504 + ... + 70116.

It is an arithmetic number, because the mean of its divisors is an integer number (1740690).

Almost surely, 2^42793530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42793530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55702080).

42793530 is an abundant number, since it is smaller than the sum of its proper divisors (68610630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42793530 is a wasteful number, since it uses less digits than its factorization.

42793530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 42793530 is about 6541.6763906509. The cubic root of 42793530 is about 349.7781723620.

The spelling of 42793530 in words is "forty-two million, seven hundred ninety-three thousand, five hundred thirty".