42402144340 has 24 divisors (see below), whose sum is σ = 91115307360. Its totient is φ = 16566418848.

The previous prime is 42402144329. The next prime is 42402144359. The reversal of 42402144340 is 4344120424.

It is a junction number, because it is equal to n+sod(n) for n = 42402144299 and 42402144308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24651550 + ... + 24653269.

It is an arithmetic number, because the mean of its divisors is an integer number (3796471140).

Almost surely, 2^42402144340 is an apocalyptic number.

It is an amenable number.

42402144340 is an abundant number, since it is smaller than the sum of its proper divisors (48713163020).

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

42402144340 is a wasteful number, since it uses less digits than its factorization.

42402144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49304871 (or 49304869 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42402144340 its reverse (4344120424), we get a palindrome (46746264764).

The spelling of 42402144340 in words is "forty-two billion, four hundred two million, one hundred forty-four thousand, three hundred forty".