42340232439 has 20 divisors (see below), whose sum is σ = 63747028224. Its totient is φ = 28004556384.

The previous prime is 42340232437. The next prime is 42340232443. The reversal of 42340232439 is 93423204324.

42340232439 is a `hidden beast` number, since 4 + 2 + 3 + 402 + 3 + 243 + 9 = 666.

It is not a de Polignac number, because 42340232439 - 2¹ = 42340232437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340232437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2047662 + ... + 2068235.

Almost surely, 2^42340232439 is an apocalyptic number.

42340232439 is a deficient number, since it is larger than the sum of its proper divisors (21406795785).

42340232439 is a wasteful number, since it uses less digits than its factorization.

42340232439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116036 (or 4116027 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 42340232439 in words is "forty-two billion, three hundred forty million, two hundred thirty-two thousand, four hundred thirty-nine".