42340232440 has 32 divisors (see below), whose sum is σ = 103926026160. Its totient is φ = 15396448000.

The previous prime is 42340232437. The next prime is 42340232443. The reversal of 42340232440 is 4423204324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42340232437) and next prime (42340232443).

It is a junction number, because it is equal to n+sod(n) for n = 42340232399 and 42340232408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340232443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48113461 + ... + 48114340.

Almost surely, 2^42340232440 is an apocalyptic number.

42340232440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42340232440 is an abundant number, since it is smaller than the sum of its proper divisors (61585793720).

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

42340232440 is a wasteful number, since it uses less digits than its factorization.

42340232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96227823 (or 96227819 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42340232440 its reverse (4423204324), we get a palindrome (46763436764).

The spelling of 42340232440 in words is "forty-two billion, three hundred forty million, two hundred thirty-two thousand, four hundred forty".