47142211525421 has 8 divisors (see below), whose sum is σ = 48032186364600. Its totient is φ = 46256015773440.

The previous prime is 47142211525397. The next prime is 47142211525501. The reversal of 47142211525421 is 12452511224174.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4437110538025 + 42705100987396 = 2106445^2 + 6534914^2 .

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 47142211525421 - 2²² = 47142207331117 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 (47142211528421) 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, 944746616 + ... + 944796513.

It is an arithmetic number, because the mean of its divisors is an integer number (6004023295575).

Almost surely, 2^{47142211525421} is an apocalyptic number.

It is an amenable number.

47142211525421 is a deficient number, since it is larger than the sum of its proper divisors (889974839179).

47142211525421 is a wasteful number, since it uses less digits than its factorization.

47142211525421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889543599.

The product of its digits is 179200, while the sum is 41.

Adding to 47142211525421 its reverse (12452511224174), we get a palindrome (59594722749595).

The spelling of 47142211525421 in words is "forty-seven trillion, one hundred forty-two billion, two hundred eleven million, five hundred twenty-five thousand, four hundred twenty-one".