122534242154 has 4 divisors (see below), whose sum is σ = 183801363234. Its totient is φ = 61267121076.

The previous prime is 122534242153. The next prime is 122534242163. The reversal of 122534242154 is 451242435221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451242435221 = 1117 ⋅403977113.

It can be written as a sum of positive squares in only one way, i.e., 112717990225 + 9816251929 = 335735^2 + 99077^2 .

It is a super-2 number, since 2×122534242154² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122534242153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30633560537 + ... + 30633560540.

Almost surely, 2^122534242154 is an apocalyptic number.

122534242154 is a deficient number, since it is larger than the sum of its proper divisors (61267121080).

122534242154 is an equidigital number, since it uses as much as digits as its factorization.

122534242154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61267121079.

The product of its digits is 76800, while the sum is 35.

Adding to 122534242154 its reverse (451242435221), we get a palindrome (573776677375).

The spelling of 122534242154 in words is "one hundred twenty-two billion, five hundred thirty-four million, two hundred forty-two thousand, one hundred fifty-four".