42255624 has 32 divisors (see below), whose sum is σ = 105937920. Its totient is φ = 14045376.

The previous prime is 42255617. The next prime is 42255637. The reversal of 42255624 is 42655224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42255591 and 42255600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6894 + ... + 11490.

It is an arithmetic number, because the mean of its divisors is an integer number (3310560).

Almost surely, 2^42255624 is an apocalyptic number.

It is an amenable number.

42255624 is an abundant number, since it is smaller than the sum of its proper divisors (63682296).

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

42255624 is a wasteful number, since it uses less digits than its factorization.

42255624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4985 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 42255624 is about 6500.4326009890. The cubic root of 42255624 is about 348.3064416613.

The spelling of 42255624 in words is "forty-two million, two hundred fifty-five thousand, six hundred twenty-four".