102015442123 has 16 divisors (see below), whose sum is σ = 119133780480. Its totient is φ = 85552084800.

The previous prime is 102015442097. The next prime is 102015442141. The reversal of 102015442123 is 321244510201.

It is not a de Polignac number, because 102015442123 - 2¹³ = 102015433931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102015442423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718338 + ... + 848551.

It is an arithmetic number, because the mean of its divisors is an integer number (7445861280).

Almost surely, 2^102015442123 is an apocalyptic number.

102015442123 is a deficient number, since it is larger than the sum of its proper divisors (17118338357).

102015442123 is a wasteful number, since it uses less digits than its factorization.

102015442123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567098.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 102015442123 its reverse (321244510201), we get a palindrome (423259952324).

The spelling of 102015442123 in words is "one hundred two billion, fifteen million, four hundred forty-two thousand, one hundred twenty-three".