42115241551 has 4 divisors (see below), whose sum is σ = 42141128392. Its totient is φ = 42089354712.

The previous prime is 42115241537. The next prime is 42115241579. The reversal of 42115241551 is 15514251124.

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

It is a cyclic number.

It is not a de Polignac number, because 42115241551 - 2¹³ = 42115233359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115241951) 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 3 ways as a sum of consecutive naturals, for example, 12940980 + ... + 12944233.

It is an arithmetic number, because the mean of its divisors is an integer number (10535282098).

Almost surely, 2^42115241551 is an apocalyptic number.

42115241551 is a deficient number, since it is larger than the sum of its proper divisors (25886841).

42115241551 is a wasteful number, since it uses less digits than its factorization.

42115241551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25886840.

The product of its digits is 8000, while the sum is 31.

Adding to 42115241551 its reverse (15514251124), we get a palindrome (57629492675).

The spelling of 42115241551 in words is "forty-two billion, one hundred fifteen million, two hundred forty-one thousand, five hundred fifty-one".