42774739 has 8 divisors (see below), whose sum is σ = 50571360. Its totient is φ = 35399616.

The previous prime is 42774727. The next prime is 42774773. The reversal of 42774739 is 93747724.

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

It is a de Polignac number, because none of the positive numbers 2^k-42774739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42774695 and 42774704.

It is not an unprimeable number, because it can be changed into a prime (42774709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105154 + ... + 105559.

It is an arithmetic number, because the mean of its divisors is an integer number (6321420).

Almost surely, 2^42774739 is an apocalyptic number.

42774739 is a deficient number, since it is larger than the sum of its proper divisors (7796621).

42774739 is a wasteful number, since it uses less digits than its factorization.

42774739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210749.

The product of its digits is 296352, while the sum is 43.

The square root of 42774739 is about 6540.2399803065. The cubic root of 42774739 is about 349.7269680179.

The spelling of 42774739 in words is "forty-two million, seven hundred seventy-four thousand, seven hundred thirty-nine".