105121345142 has 16 divisors (see below), whose sum is σ = 172174166352. Its totient is φ = 47738701920.

The previous prime is 105121345103. The next prime is 105121345151. The reversal of 105121345142 is 241543121501.

It is a happy number.

It is a super-3 number, since 3×105121345142³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2161793 + ... + 2209884.

It is an arithmetic number, because the mean of its divisors is an integer number (10760885397).

Almost surely, 2^105121345142 is an apocalyptic number.

105121345142 is a deficient number, since it is larger than the sum of its proper divisors (67052821210).

105121345142 is a wasteful number, since it uses less digits than its factorization.

105121345142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372783.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 105121345142 its reverse (241543121501), we get a palindrome (346664466643).

The spelling of 105121345142 in words is "one hundred five billion, one hundred twenty-one million, three hundred forty-five thousand, one hundred forty-two".