42540498 has 128 divisors (see below), whose sum is σ = 127088640. Its totient is φ = 10186560.

The previous prime is 42540497. The next prime is 42540517. The reversal of 42540498 is 89404524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540497) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53661 + ... + 54447.

It is an arithmetic number, because the mean of its divisors is an integer number (992880).

Almost surely, 2^42540498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42540498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63544320).

42540498 is an abundant number, since it is smaller than the sum of its proper divisors (84548142).

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

42540498 is a wasteful number, since it uses less digits than its factorization.

42540498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 42540498 is about 6522.3077204315. The cubic root of 42540498 is about 349.0874130731.

The spelling of 42540498 in words is "forty-two million, five hundred forty thousand, four hundred ninety-eight".