121542442041 has 16 divisors (see below), whose sum is σ = 162887856128. Its totient is φ = 80612960400.

The previous prime is 121542442003. The next prime is 121542442057. The reversal of 121542442041 is 140244245121.

It is not a de Polignac number, because 121542442041 - 2¹⁴ = 121542425657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121542442741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654800 + ... + 1726686.

It is an arithmetic number, because the mean of its divisors is an integer number (10180491008).

Almost surely, 2^121542442041 is an apocalyptic number.

It is an amenable number.

121542442041 is a deficient number, since it is larger than the sum of its proper divisors (41345414087).

121542442041 is a wasteful number, since it uses less digits than its factorization.

121542442041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74772.

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 121542442041 its reverse (140244245121), we get a palindrome (261786687162).

The spelling of 121542442041 in words is "one hundred twenty-one billion, five hundred forty-two million, four hundred forty-two thousand, forty-one".