42660540 has 192 divisors, whose sum is σ = 146764800. Its totient is φ = 10222848.

The previous prime is 42660539. The next prime is 42660559. The reversal of 42660540 is 4506624.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 414129 + ... + 414231.

It is an arithmetic number, because the mean of its divisors is an integer number (764400).

Almost surely, 2^42660540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42660540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73382400).

42660540 is an abundant number, since it is smaller than the sum of its proper divisors (104104260).

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

42660540 is a wasteful number, since it uses less digits than its factorization.

42660540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 42660540 is about 6531.5036553615. The cubic root of 42660540 is about 349.4154596679.

The spelling of 42660540 in words is "forty-two million, six hundred sixty thousand, five hundred forty".