126642342155 has 12 divisors (see below), whose sum is σ = 176782371840. Its totient is φ = 86840463024.

The previous prime is 126642342149. The next prime is 126642342173. The reversal of 126642342155 is 551243246621.

It is not a de Polignac number, because 126642342155 - 2⁶ = 126642342091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258453515 + ... + 258454004.

It is an arithmetic number, because the mean of its divisors is an integer number (14731864320).

Almost surely, 2^126642342155 is an apocalyptic number.

126642342155 is a deficient number, since it is larger than the sum of its proper divisors (50140029685).

126642342155 is an equidigital number, since it uses as much as digits as its factorization.

126642342155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516907538 (or 516907531 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

Adding to 126642342155 its reverse (551243246621), we get a palindrome (677885588776).

The spelling of 126642342155 in words is "one hundred twenty-six billion, six hundred forty-two million, three hundred forty-two thousand, one hundred fifty-five".