43142561345 has 8 divisors (see below), whose sum is σ = 55753463976. Its totient is φ = 31859122176.

The previous prime is 43142561333. The next prime is 43142561347. The reversal of 43142561345 is 54316524134.

It can be written as a sum of positive squares in 4 ways, for example, as 4141051201 + 39001510144 = 64351^2 + 197488^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43142561345 - 2¹⁴ = 43142544961 is a prime.

It is a super-2 number, since 2×43142561345² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43142561299 and 43142561308.

It is not an unprimeable number, because it can be changed into a prime (43142561347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331865792 + ... + 331865921.

It is an arithmetic number, because the mean of its divisors is an integer number (6969182997).

Almost surely, 2^43142561345 is an apocalyptic number.

It is an amenable number.

43142561345 is a deficient number, since it is larger than the sum of its proper divisors (12610902631).

43142561345 is a wasteful number, since it uses less digits than its factorization.

43142561345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663731731.

The product of its digits is 172800, while the sum is 38.

The spelling of 43142561345 in words is "forty-three billion, one hundred forty-two million, five hundred sixty-one thousand, three hundred forty-five".