122871711542 has 4 divisors (see below), whose sum is σ = 184307567316. Its totient is φ = 61435855770.

The previous prime is 122871711463. The next prime is 122871711583. The reversal of 122871711542 is 245117178221.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 122871711542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30717927884 + ... + 30717927887.

It is an arithmetic number, because the mean of its divisors is an integer number (46076891829).

Almost surely, 2^122871711542 is an apocalyptic number.

122871711542 is a deficient number, since it is larger than the sum of its proper divisors (61435855774).

122871711542 is an equidigital number, since it uses as much as digits as its factorization.

122871711542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61435855773.

The product of its digits is 62720, while the sum is 41.

Adding to 122871711542 its reverse (245117178221), we get a palindrome (367988889763).

The spelling of 122871711542 in words is "one hundred twenty-two billion, eight hundred seventy-one million, seven hundred eleven thousand, five hundred forty-two".