42389722326121 has 9 divisors (see below), whose sum is σ = 42431034102583. Its totient is φ = 42348450751600.

The previous prime is 42389722326073. The next prime is 42389722326167. The reversal of 42389722326121 is 12162322798324.

The square root of 42389722326121 is 6510739.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 34388970652521 + 8000751673600 = 5864211^2 + 2828560^2 .

It is not a de Polignac number, because 42389722326121 - 2¹¹ = 42389722324073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42389722326521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8392340046 + ... + 8392345096.

Almost surely, 2^{42389722326121} is an apocalyptic number.

42389722326121 is the 6510739-th square number.

42389722326121 is the 3255370-th centered octagonal number.

It is an amenable number.

42389722326121 is a deficient number, since it is larger than the sum of its proper divisors (41311776462).

42389722326121 is an frugal number, since it uses more digits than its factorization.

42389722326121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12680 (or 6340 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 42389722326121 in words is "forty-two trillion, three hundred eighty-nine billion, seven hundred twenty-two million, three hundred twenty-six thousand, one hundred twenty-one".