42012320340 has 96 divisors (see below), whose sum is σ = 124391070720. Its totient is φ = 10577433600.

The previous prime is 42012320321. The next prime is 42012320341. The reversal of 42012320340 is 4302321024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012320341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199195 + ... + 351714.

It is an arithmetic number, because the mean of its divisors is an integer number (1295740320).

Almost surely, 2^42012320340 is an apocalyptic number.

It is an amenable number.

42012320340 is an abundant number, since it is smaller than the sum of its proper divisors (82378750380).

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

42012320340 is a wasteful number, since it uses less digits than its factorization.

42012320340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550993 (or 550991 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 42012320340 its reverse (4302321024), we get a palindrome (46314641364).

The spelling of 42012320340 in words is "forty-two billion, twelve million, three hundred twenty thousand, three hundred forty".