161402421324 has 24 divisors (see below), whose sum is σ = 376612504128. Its totient is φ = 53799827920.

The previous prime is 161402421287. The next prime is 161402421347. The reversal of 161402421324 is 423124204161.

It is a junction number, because it is equal to n+sod(n) for n = 161402421291 and 161402421300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918439 + ... + 1079969.

It is an arithmetic number, because the mean of its divisors is an integer number (15692187672).

Almost surely, 2^161402421324 is an apocalyptic number.

It is an amenable number.

161402421324 is an abundant number, since it is smaller than the sum of its proper divisors (215210082804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161402421324 is a wasteful number, since it uses less digits than its factorization.

161402421324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244805 (or 244803 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 161402421324 its reverse (423124204161), we get a palindrome (584526625485).

The spelling of 161402421324 in words is "one hundred sixty-one billion, four hundred two million, four hundred twenty-one thousand, three hundred twenty-four".