42770734 has 4 divisors (see below), whose sum is σ = 64156104. Its totient is φ = 21385366.

The previous prime is 42770719. The next prime is 42770743. The reversal of 42770734 is 43707724.

It is a happy number.

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 42770734.

It is a congruent number.

It is an unprimeable number.

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, 10692682 + ... + 10692685.

It is an arithmetic number, because the mean of its divisors is an integer number (16039026).

Almost surely, 2^42770734 is an apocalyptic number.

42770734 is a deficient number, since it is larger than the sum of its proper divisors (21385370).

42770734 is a wasteful number, since it uses less digits than its factorization.

42770734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21385369.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 42770734 is about 6539.9337917138. The cubic root of 42770734 is about 349.7160526953.

The spelling of 42770734 in words is "forty-two million, seven hundred seventy thousand, seven hundred thirty-four".