43439020542 has 24 divisors (see below), whose sum is σ = 94148155920. Its totient is φ = 14475015360.

The previous prime is 43439020531. The next prime is 43439020549. The reversal of 43439020542 is 24502093434.

43439020542 is a `hidden beast` number, since 4 + 3 + 4 + 3 + 90 + 20 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 43439020497 and 43439020506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43439020549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330442 + ... + 442797.

It is an arithmetic number, because the mean of its divisors is an integer number (3922839830).

Almost surely, 2^43439020542 is an apocalyptic number.

43439020542 is an abundant number, since it is smaller than the sum of its proper divisors (50709135378).

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

43439020542 is a wasteful number, since it uses less digits than its factorization.

43439020542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776368 (or 776365 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 43439020542 in words is "forty-three billion, four hundred thirty-nine million, twenty thousand, five hundred forty-two".