121306043042 has 8 divisors (see below), whose sum is σ = 181964524332. Its totient is φ = 60651201600.

The previous prime is 121306043021. The next prime is 121306043123. The reversal of 121306043042 is 240340603121.

It can be written as a sum of positive squares in 2 ways, for example, as 121249507681 + 56535361 = 348209^2 + 7519^2 .

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

It is a super-2 number, since 2×121306043042² (a number of 23 digits) contains 22 as substring.

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, 825059 + ... + 960902.

Almost surely, 2^121306043042 is an apocalyptic number.

121306043042 is a deficient number, since it is larger than the sum of its proper divisors (60658481290).

121306043042 is a wasteful number, since it uses less digits than its factorization.

121306043042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819924.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 121306043042 its reverse (240340603121), we get a palindrome (361646646163).

The spelling of 121306043042 in words is "one hundred twenty-one billion, three hundred six million, forty-three thousand, forty-two".