42113550 has 48 divisors (see below), whose sum is σ = 104993280. Its totient is φ = 11171040.

The previous prime is 42113549. The next prime is 42113569. The reversal of 42113550 is 5531124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32821 + ... + 34079.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^42113550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42113550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52496640).

42113550 is an abundant number, since it is smaller than the sum of its proper divisors (62879730).

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

42113550 is a wasteful number, since it uses less digits than its factorization.

42113550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 42113550 is about 6489.4953578842. The cubic root of 42113550 is about 347.9156388191.

Adding to 42113550 its reverse (5531124), we get a palindrome (47644674).

The spelling of 42113550 in words is "forty-two million, one hundred thirteen thousand, five hundred fifty".