42115202443 has 4 divisors (see below), whose sum is σ = 42130637640. Its totient is φ = 42099767248.

The previous prime is 42115202407. The next prime is 42115202473. The reversal of 42115202443 is 34420251124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42115202443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42115202473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7713505 + ... + 7718962.

It is an arithmetic number, because the mean of its divisors is an integer number (10532659410).

Almost surely, 2^42115202443 is an apocalyptic number.

42115202443 is a deficient number, since it is larger than the sum of its proper divisors (15435197).

42115202443 is a wasteful number, since it uses less digits than its factorization.

42115202443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15435196.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 42115202443 its reverse (34420251124), we get a palindrome (76535453567).

The spelling of 42115202443 in words is "forty-two billion, one hundred fifteen million, two hundred two thousand, four hundred forty-three".