42521012340 has 48 divisors (see below), whose sum is σ = 126062298432. Its totient is φ = 10671940096.

The previous prime is 42521012327. The next prime is 42521012353. The reversal of 42521012340 is 4321012524.

42521012340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42521012327) and next prime (42521012353).

It is a self number, because there is not a number n which added to its sum of digits gives 42521012340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20842614 + ... + 20844653.

It is an arithmetic number, because the mean of its divisors is an integer number (2626297884).

Almost surely, 2^42521012340 is an apocalyptic number.

It is an amenable number.

42521012340 is an abundant number, since it is smaller than the sum of its proper divisors (83541286092).

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

42521012340 is a wasteful number, since it uses less digits than its factorization.

42521012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41687296 (or 41687294 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 42521012340 its reverse (4321012524), we get a palindrome (46842024864).

The spelling of 42521012340 in words is "forty-two billion, five hundred twenty-one million, twelve thousand, three hundred forty".