42755620 has 48 divisors (see below), whose sum is σ = 96018048. Its totient is φ = 15952640.

The previous prime is 42755611. The next prime is 42755621. The reversal of 42755620 is 2655724.

It is not an unprimeable number, because it can be changed into a prime (42755621) 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, 17727 + ... + 19993.

It is an arithmetic number, because the mean of its divisors is an integer number (2000376).

Almost surely, 2^42755620 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 42755620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48009024).

42755620 is an abundant number, since it is smaller than the sum of its proper divisors (53262428).

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

42755620 is a wasteful number, since it uses less digits than its factorization.

42755620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 42755620 is about 6538.7781733287. The cubic root of 42755620 is about 349.6748545001.

The spelling of 42755620 in words is "forty-two million, seven hundred fifty-five thousand, six hundred twenty".