42777734 has 4 divisors (see below), whose sum is σ = 64166604. Its totient is φ = 21388866.

The previous prime is 42777727. The next prime is 42777767. The reversal of 42777734 is 43777724.

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

It is a junction number, because it is equal to n+sod(n) for n = 42777691 and 42777700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10694432 + ... + 10694435.

It is an arithmetic number, because the mean of its divisors is an integer number (16041651).

Almost surely, 2^42777734 is an apocalyptic number.

42777734 is a deficient number, since it is larger than the sum of its proper divisors (21388870).

42777734 is a wasteful number, since it uses less digits than its factorization.

42777734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388869.

The product of its digits is 230496, while the sum is 41.

The square root of 42777734 is about 6540.4689434321. The cubic root of 42777734 is about 349.7351302171.

The spelling of 42777734 in words is "forty-two million, seven hundred seventy-seven thousand, seven hundred thirty-four".