43542453420 has 48 divisors (see below), whose sum is σ = 135465412320. Its totient is φ = 11611320768.

The previous prime is 43542453407. The next prime is 43542453443. The reversal of 43542453420 is 2435424534.

43542453420 is a `hidden beast` number, since 43 + 542 + 4 + 53 + 4 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40316547 + ... + 40317626.

It is an arithmetic number, because the mean of its divisors is an integer number (2822196090).

Almost surely, 2^43542453420 is an apocalyptic number.

It is an amenable number.

43542453420 is an abundant number, since it is smaller than the sum of its proper divisors (91922958900).

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

43542453420 is a wasteful number, since it uses less digits than its factorization.

43542453420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80634191 (or 80634183 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 43542453420 its reverse (2435424534), we get a palindrome (45977877954).

The spelling of 43542453420 in words is "forty-three billion, five hundred forty-two million, four hundred fifty-three thousand, four hundred twenty".