42531798 has 16 divisors (see below), whose sum is σ = 85135536. Its totient is φ = 14165280.

The previous prime is 42531793. The next prime is 42531809. The reversal of 42531798 is 89713524.

It is a super-2 number, since 2×42531798² = 3617907682225608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7540 + ... + 11912.

It is an arithmetic number, because the mean of its divisors is an integer number (5320971).

Almost surely, 2^42531798 is an apocalyptic number.

42531798 is an abundant number, since it is smaller than the sum of its proper divisors (42603738).

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

42531798 is a wasteful number, since it uses less digits than its factorization.

42531798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999.

The product of its digits is 60480, while the sum is 39.

The square root of 42531798 is about 6521.6407444753. The cubic root of 42531798 is about 349.0636140448.

It can be divided in two parts, 425 and 31798, that added together give a palindrome (32223).

The spelling of 42531798 in words is "forty-two million, five hundred thirty-one thousand, seven hundred ninety-eight".