42539550 has 48 divisors (see below), whose sum is σ = 108086832. Its totient is φ = 11065600.

The previous prime is 42539543. The next prime is 42539561. The reversal of 42539550 is 5593524.

It is a super-2 number, since 2×42539550² = 3619226628405000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2692 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (2251809).

Almost surely, 2^42539550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42539550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54043416).

42539550 is an abundant number, since it is smaller than the sum of its proper divisors (65547282).

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

42539550 is a wasteful number, since it uses less digits than its factorization.

42539550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973 (or 6968 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 42539550 is about 6522.2350463626. The cubic root of 42539550 is about 349.0848199572.

The spelling of 42539550 in words is "forty-two million, five hundred thirty-nine thousand, five hundred fifty".