42215552 has 32 divisors (see below), whose sum is σ = 86822400. Its totient is φ = 20424960.

The previous prime is 42215531. The next prime is 42215581. The reversal of 42215552 is 25551224.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (2713200).

Almost surely, 2^42215552 is an apocalyptic number.

It is an amenable number.

42215552 is an abundant number, since it is smaller than the sum of its proper divisors (44606848).

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

42215552 is a wasteful number, since it uses less digits than its factorization.

42215552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684 (or 10672 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 42215552 is about 6497.3496134963. The cubic root of 42215552 is about 348.1963044475.

Adding to 42215552 its reverse (25551224), we get a palindrome (67766776).

The spelling of 42215552 in words is "forty-two million, two hundred fifteen thousand, five hundred fifty-two".