42508550 has 24 divisors (see below), whose sum is σ = 90361776. Its totient is φ = 14574240.

The previous prime is 42508537. The next prime is 42508559. The reversal of 42508550 is 5580524.

It is a Cunningham number, because it is equal to 349³+1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42508559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60377 + ... + 61076.

It is an arithmetic number, because the mean of its divisors is an integer number (3765074).

Almost surely, 2^42508550 is an apocalyptic number.

42508550 is an abundant number, since it is smaller than the sum of its proper divisors (47853226).

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

42508550 is a wasteful number, since it uses less digits than its factorization.

42508550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121472 (or 121467 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 42508550 is about 6519.8581272908. The cubic root of 42508550 is about 349.0000027367. Note that the first 5 decimals are identical.

The spelling of 42508550 in words is "forty-two million, five hundred eight thousand, five hundred fifty".