123148027242 has 128 divisors (see below), whose sum is σ = 310957056000. Its totient is φ = 35915140800.

The previous prime is 123148027231. The next prime is 123148027243. The reversal of 123148027242 is 242720841321.

123148027242 is a `hidden beast` number, since 1 + 2 + 314 + 80 + 27 + 242 = 666.

It is a super-2 number, since 2×123148027242² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123148027197 and 123148027206.

It is not an unprimeable number, because it can be changed into a prime (123148027243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 594367 + ... + 774317.

It is an arithmetic number, because the mean of its divisors is an integer number (2429352000).

Almost surely, 2^123148027242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123148027242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155478528000).

123148027242 is an abundant number, since it is smaller than the sum of its proper divisors (187809028758).

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

123148027242 is a wasteful number, since it uses less digits than its factorization.

123148027242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180033 (or 180027 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

Adding to 123148027242 its reverse (242720841321), we get a palindrome (365868868563).

The spelling of 123148027242 in words is "one hundred twenty-three billion, one hundred forty-eight million, twenty-seven thousand, two hundred forty-two".