42513121515443 has 2 divisors, whose sum is σ = 42513121515444. Its totient is φ = 42513121515442.

The previous prime is 42513121515427. The next prime is 42513121515493. The reversal of 42513121515443 is 34451512131524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42513121515443 - 2⁴ = 42513121515427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42513121515443.

It is not a weakly prime, because it can be changed into another prime (42513121515493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256560757721 + 21256560757722.

It is an arithmetic number, because the mean of its divisors is an integer number (21256560757722).

Almost surely, 2^{42513121515443} is an apocalyptic number.

42513121515443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42513121515443 is an equidigital number, since it uses as much as digits as its factorization.

42513121515443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288000, while the sum is 41.

Adding to 42513121515443 its reverse (34451512131524), we get a palindrome (76964633646967).

The spelling of 42513121515443 in words is "forty-two trillion, five hundred thirteen billion, one hundred twenty-one million, five hundred fifteen thousand, four hundred forty-three".