242126156123 has 8 divisors (see below), whose sum is σ = 249124332240. Its totient is φ = 235180011520.

The previous prime is 242126156101. The next prime is 242126156137. The reversal of 242126156123 is 321651621242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242126156123 - 2¹² = 242126152027 is a prime.

It is a super-2 number, since 2×242126156123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242126156143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12998438 + ... + 13017051.

It is an arithmetic number, because the mean of its divisors is an integer number (31140541530).

Almost surely, 2^242126156123 is an apocalyptic number.

242126156123 is a deficient number, since it is larger than the sum of its proper divisors (6998176117).

242126156123 is a wasteful number, since it uses less digits than its factorization.

242126156123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26015757.

The product of its digits is 34560, while the sum is 35.

Adding to 242126156123 its reverse (321651621242), we get a palindrome (563777777365).

The spelling of 242126156123 in words is "two hundred forty-two billion, one hundred twenty-six million, one hundred fifty-six thousand, one hundred twenty-three".