123542706542 has 8 divisors (see below), whose sum is σ = 185623434000. Its totient is φ = 61668228544.

The previous prime is 123542706491. The next prime is 123542706583. The reversal of 123542706542 is 245607245321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123542706542.

It is a congruent number.

It is an unprimeable number.

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, 51560867 + ... + 51563262.

It is an arithmetic number, because the mean of its divisors is an integer number (23202929250).

Almost surely, 2^123542706542 is an apocalyptic number.

123542706542 is a deficient number, since it is larger than the sum of its proper divisors (62080727458).

123542706542 is a wasteful number, since it uses less digits than its factorization.

123542706542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103124730.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 123542706542 in words is "one hundred twenty-three billion, five hundred forty-two million, seven hundred six thousand, five hundred forty-two".