121136453142 has 16 divisors (see below), whose sum is σ = 242293872240. Its totient is φ = 40375323392.

The previous prime is 121136453111. The next prime is 121136453149. The reversal of 121136453142 is 241354631121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121136453149) 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 7 ways as a sum of consecutive naturals, for example, 797967 + ... + 937562.

It is an arithmetic number, because the mean of its divisors is an integer number (15143367015).

Almost surely, 2^121136453142 is an apocalyptic number.

121136453142 is an abundant number, since it is smaller than the sum of its proper divisors (121157419098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121136453142 is a wasteful number, since it uses less digits than its factorization.

121136453142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747167.

The product of its digits is 17280, while the sum is 33.

The spelling of 121136453142 in words is "one hundred twenty-one billion, one hundred thirty-six million, four hundred fifty-three thousand, one hundred forty-two".