42774806 has 4 divisors (see below), whose sum is σ = 64162212. Its totient is φ = 21387402.

The previous prime is 42774803. The next prime is 42774817. The reversal of 42774806 is 60847724.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42774806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42774803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10693700 + ... + 10693703.

It is an arithmetic number, because the mean of its divisors is an integer number (16040553).

Almost surely, 2^42774806 is an apocalyptic number.

42774806 is a deficient number, since it is larger than the sum of its proper divisors (21387406).

42774806 is a wasteful number, since it uses less digits than its factorization.

42774806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21387405.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 42774806 is about 6540.2451024407. The cubic root of 42774806 is about 349.7271506155.

The spelling of 42774806 in words is "forty-two million, seven hundred seventy-four thousand, eight hundred six".