42140023240 has 64 divisors (see below), whose sum is σ = 114063235200. Its totient is φ = 13687584768.

The previous prime is 42140023201. The next prime is 42140023243. The reversal of 42140023240 is 4232004124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42140023243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3955209 + ... + 3965848.

It is an arithmetic number, because the mean of its divisors is an integer number (1782238050).

Almost surely, 2^42140023240 is an apocalyptic number.

42140023240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42140023240 is an abundant number, since it is smaller than the sum of its proper divisors (71923211960).

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

42140023240 is a wasteful number, since it uses less digits than its factorization.

42140023240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921094 (or 7921090 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 42140023240 its reverse (4232004124), we get a palindrome (46372027364).

The spelling of 42140023240 in words is "forty-two billion, one hundred forty million, twenty-three thousand, two hundred forty".