42042350343521 has 8 divisors (see below), whose sum is σ = 47343878393088. Its totient is φ = 36987404994000.

The previous prime is 42042350343493. The next prime is 42042350343559. The reversal of 42042350343521 is 12534305324024.

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 42042350343521 - 2¹⁸ = 42042350081377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42042350345521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61645674650 + ... + 61645675331.

It is an arithmetic number, because the mean of its divisors is an integer number (5917984799136).

Almost surely, 2^{42042350343521} is an apocalyptic number.

It is an amenable number.

42042350343521 is a deficient number, since it is larger than the sum of its proper divisors (5301528049567).

42042350343521 is a wasteful number, since it uses less digits than its factorization.

42042350343521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123291350023.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 42042350343521 its reverse (12534305324024), we get a palindrome (54576655667545).

The spelling of 42042350343521 in words is "forty-two trillion, forty-two billion, three hundred fifty million, three hundred forty-three thousand, five hundred twenty-one".