42655416 has 64 divisors (see below), whose sum is σ = 111041280. Its totient is φ = 13643520.

The previous prime is 42655391. The next prime is 42655421. The reversal of 42655416 is 61455624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65605 + ... + 66251.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^42655416 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 42655416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55520640).

42655416 is an abundant number, since it is smaller than the sum of its proper divisors (68385864).

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

42655416 is a wasteful number, since it uses less digits than its factorization.

42655416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 760 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 42655416 is about 6531.1113908737. Note that the first 3 decimals coincide. The cubic root of 42655416 is about 349.4014695614.

It can be divided in two parts, 42655 and 416, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 42655416 in words is "forty-two million, six hundred fifty-five thousand, four hundred sixteen".