42855672 has 64 divisors (see below), whose sum is σ = 110662560. Its totient is φ = 13824000.

The previous prime is 42855661. The next prime is 42855677. The reversal of 42855672 is 27655824.

It is a self number, because there is not a number n which added to its sum of digits gives 42855672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42855677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106672 + ... + 107072.

Almost surely, 2^42855672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42855672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55331280).

42855672 is an abundant number, since it is smaller than the sum of its proper divisors (67806888).

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

42855672 is a wasteful number, since it uses less digits than its factorization.

42855672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 540 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 42855672 is about 6546.4243675460. The cubic root of 42855672 is about 349.9473988978.

The spelling of 42855672 in words is "forty-two million, eight hundred fifty-five thousand, six hundred seventy-two".