42739256 has 16 divisors (see below), whose sum is σ = 91584240. Its totient is φ = 18316800.

The previous prime is 42739247. The next prime is 42739259. The reversal of 42739256 is 65293724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42739259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381545 + ... + 381656.

It is an arithmetic number, because the mean of its divisors is an integer number (5724015).

Almost surely, 2^42739256 is an apocalyptic number.

It is an amenable number.

42739256 is an abundant number, since it is smaller than the sum of its proper divisors (48844984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42739256 is a wasteful number, since it uses less digits than its factorization.

42739256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763214 (or 763210 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 42739256 is about 6537.5267494673. The cubic root of 42739256 is about 349.6302380693.

The spelling of 42739256 in words is "forty-two million, seven hundred thirty-nine thousand, two hundred fifty-six".