42776738 has 8 divisors (see below), whose sum is σ = 65217180. Its totient is φ = 21037680.

The previous prime is 42776737. The next prime is 42776749. The reversal of 42776738 is 83767724.

It can be written as a sum of positive squares in 2 ways, for example, as 36808489 + 5968249 = 6067^2 + 2443^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42776737) 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 in 3 ways as a sum of consecutive naturals, for example, 175193 + ... + 175436.

Almost surely, 2^42776738 is an apocalyptic number.

42776738 is a deficient number, since it is larger than the sum of its proper divisors (22440442).

42776738 is a wasteful number, since it uses less digits than its factorization.

42776738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350692.

The product of its digits is 395136, while the sum is 44.

The square root of 42776738 is about 6540.3928016595. The cubic root of 42776738 is about 349.7324158853.

The spelling of 42776738 in words is "forty-two million, seven hundred seventy-six thousand, seven hundred thirty-eight".