42790063 has 4 divisors (see below), whose sum is σ = 42809400. Its totient is φ = 42770728.

The previous prime is 42790061. The next prime is 42790079. The reversal of 42790063 is 36009724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42790063 - 2¹ = 42790061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42790061) 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, 5845 + ... + 10942.

It is an arithmetic number, because the mean of its divisors is an integer number (10702350).

Almost surely, 2^42790063 is an apocalyptic number.

42790063 is a deficient number, since it is larger than the sum of its proper divisors (19337).

42790063 is a wasteful number, since it uses less digits than its factorization.

42790063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19336.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 42790063 is about 6541.4113920468. The cubic root of 42790063 is about 349.7687261235.

Adding to 42790063 its reverse (36009724), we get a palindrome (78799787).

The spelling of 42790063 in words is "forty-two million, seven hundred ninety thousand, sixty-three".