42798782 has 8 divisors (see below), whose sum is σ = 69136536. Its totient is φ = 19753272.

The previous prime is 42798781. The next prime is 42798787. The reversal of 42798782 is 28789724.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42798781) 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, 823028 + ... + 823079.

It is an arithmetic number, because the mean of its divisors is an integer number (8642067).

Almost surely, 2^42798782 is an apocalyptic number.

42798782 is a deficient number, since it is larger than the sum of its proper divisors (26337754).

42798782 is a wasteful number, since it uses less digits than its factorization.

42798782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646122.

The product of its digits is 451584, while the sum is 47.

The square root of 42798782 is about 6542.0778044899. The cubic root of 42798782 is about 349.7924810656.

The spelling of 42798782 in words is "forty-two million, seven hundred ninety-eight thousand, seven hundred eighty-two".