42798790 has 8 divisors (see below), whose sum is σ = 77037840. Its totient is φ = 17119512.

The previous prime is 42798787. The next prime is 42798799. The reversal of 42798790 is 9789724.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42798790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42798799) 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, 2139930 + ... + 2139949.

It is an arithmetic number, because the mean of its divisors is an integer number (9629730).

Almost surely, 2^42798790 is an apocalyptic number.

42798790 is a deficient number, since it is larger than the sum of its proper divisors (34239050).

42798790 is a wasteful number, since it uses less digits than its factorization.

42798790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279886.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 42798790 is about 6542.0784159165. The cubic root of 42798790 is about 349.7925028602.

The spelling of 42798790 in words is "forty-two million, seven hundred ninety-eight thousand, seven hundred ninety".