42340400343565 has 8 divisors (see below), whose sum is σ = 51641406321048. Its totient is φ = 33317036335680.

The previous prime is 42340400343539. The next prime is 42340400343629. The reversal of 42340400343565 is 56534300404324.

It can be written as a sum of positive squares in 4 ways, for example, as 3017241954441 + 39323158389124 = 1737021^2 + 6270818^2 .

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

It is not a de Polignac number, because 42340400343565 - 2⁹ = 42340400343053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69410492062 + ... + 69410492671.

It is an arithmetic number, because the mean of its divisors is an integer number (6455175790131).

Almost surely, 2^{42340400343565} is an apocalyptic number.

It is an amenable number.

42340400343565 is a deficient number, since it is larger than the sum of its proper divisors (9301005977483).

42340400343565 is a wasteful number, since it uses less digits than its factorization.

42340400343565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138820984799.

The product of its (nonzero) digits is 2073600, while the sum is 43.

Adding to 42340400343565 its reverse (56534300404324), we get a palindrome (98874700747889).

The spelling of 42340400343565 in words is "forty-two trillion, three hundred forty billion, four hundred million, three hundred forty-three thousand, five hundred sixty-five".