42449550 has 96 divisors (see below), whose sum is σ = 123742080. Its totient is φ = 9494400.

The previous prime is 42449543. The next prime is 42449567. The reversal of 42449550 is 5594424.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20461 + ... + 22439.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^42449550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42449550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61871040).

42449550 is an abundant number, since it is smaller than the sum of its proper divisors (81292530).

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

42449550 is a wasteful number, since it uses less digits than its factorization.

42449550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018 (or 2013 counting only the distinct ones).

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

The square root of 42449550 is about 6515.3319178688. The cubic root of 42449550 is about 348.8384624193.

The spelling of 42449550 in words is "forty-two million, four hundred forty-nine thousand, five hundred fifty".