2123612078542 has 8 divisors (see below), whose sum is σ = 3188632468032. Its totient is φ = 1060734589200.

The previous prime is 2123612078507. The next prime is 2123612078629. The reversal of 2123612078542 is 2458702163212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535722559 + ... + 535726522.

It is an arithmetic number, because the mean of its divisors is an integer number (398579058504).

Almost surely, 2^{2123612078542} is an apocalyptic number.

2123612078542 is a deficient number, since it is larger than the sum of its proper divisors (1065020389490).

2123612078542 is a wasteful number, since it uses less digits than its factorization.

2123612078542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071450074.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 2123612078542 in words is "two trillion, one hundred twenty-three billion, six hundred twelve million, seventy-eight thousand, five hundred forty-two".