123155501342 has 8 divisors (see below), whose sum is σ = 186808906800. Its totient is φ = 60885865744.

The previous prime is 123155501341. The next prime is 123155501347. The reversal of 123155501342 is 243105551321.

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

It is a junction number, because it is equal to n+sod(n) for n = 123155501299 and 123155501308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123155501341) 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 in 3 ways as a sum of consecutive naturals, for example, 345942242 + ... + 345942597.

It is an arithmetic number, because the mean of its divisors is an integer number (23351113350).

Almost surely, 2^123155501342 is an apocalyptic number.

123155501342 is a deficient number, since it is larger than the sum of its proper divisors (63653405458).

123155501342 is an equidigital number, since it uses as much as digits as its factorization.

123155501342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691884930.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 123155501342 in words is "one hundred twenty-three billion, one hundred fifty-five million, five hundred one thousand, three hundred forty-two".