42441540 has 24 divisors (see below), whose sum is σ = 118836480. Its totient is φ = 11317728.

The previous prime is 42441527. The next prime is 42441551. The reversal of 42441540 is 4514424.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42441540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353620 + ... + 353739.

It is an arithmetic number, because the mean of its divisors is an integer number (4951520).

Almost surely, 2^42441540 is an apocalyptic number.

It is an amenable number.

42441540 is an abundant number, since it is smaller than the sum of its proper divisors (76394940).

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

42441540 is a wasteful number, since it uses less digits than its factorization.

42441540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707371 (or 707369 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 42441540 is about 6514.7171849590. The cubic root of 42441540 is about 348.8165197300.

Adding to 42441540 its reverse (4514424), we get a palindrome (46955964).

The spelling of 42441540 in words is "forty-two million, four hundred forty-one thousand, five hundred forty".