162341421421 has 4 divisors (see below), whose sum is σ = 167939401500. Its totient is φ = 156743441344.

The previous prime is 162341421419. The next prime is 162341421427. The reversal of 162341421421 is 124124143261.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57307093321 + 105034328100 = 239389^2 + 324090^2 .

It is a cyclic number.

It is not a de Polignac number, because 162341421421 - 2¹ = 162341421419 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 (162341421427) 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, 2798989996 + ... + 2798990053.

It is an arithmetic number, because the mean of its divisors is an integer number (41984850375).

Almost surely, 2^162341421421 is an apocalyptic number.

It is an amenable number.

162341421421 is a deficient number, since it is larger than the sum of its proper divisors (5597980079).

162341421421 is an equidigital number, since it uses as much as digits as its factorization.

162341421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597980078.

The product of its digits is 9216, while the sum is 31.

Adding to 162341421421 its reverse (124124143261), we get a palindrome (286465564682).

The spelling of 162341421421 in words is "one hundred sixty-two billion, three hundred forty-one million, four hundred twenty-one thousand, four hundred twenty-one".