42855744 has 28 divisors (see below), whose sum is σ = 113389664. Its totient is φ = 14285184.

The previous prime is 42855721. The next prime is 42855749. The reversal of 42855744 is 44755824.

It is a super-2 number, since 2×42855744² = 3673229587587072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42855749) 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, 111412 + ... + 111795.

Almost surely, 2^42855744 is an apocalyptic number.

It is an amenable number.

42855744 is an abundant number, since it is smaller than the sum of its proper divisors (70533920).

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

42855744 is a wasteful number, since it uses less digits than its factorization.

42855744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223222 (or 223212 counting only the distinct ones).

The product of its digits is 179200, while the sum is 39.

The square root of 42855744 is about 6546.4298667289. The cubic root of 42855744 is about 349.9475948749.

The spelling of 42855744 in words is "forty-two million, eight hundred fifty-five thousand, seven hundred forty-four".