121442043042 has 48 divisors (see below), whose sum is σ = 273015392832. Its totient is φ = 40459078800.

The previous prime is 121442043031. The next prime is 121442043083. The reversal of 121442043042 is 240340244121.

121442043042 is a `hidden beast` number, since 12 + 144 + 204 + 304 + 2 = 666.

It is a super-2 number, since 2×121442043042² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121442042997 and 121442043015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 858163 + ... + 989609.

It is an arithmetic number, because the mean of its divisors is an integer number (5687820684).

Almost surely, 2^121442043042 is an apocalyptic number.

121442043042 is an abundant number, since it is smaller than the sum of its proper divisors (151573349790).

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

121442043042 is a wasteful number, since it uses less digits than its factorization.

121442043042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133365 (or 133353 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 121442043042 its reverse (240340244121), we get a palindrome (361782287163).

The spelling of 121442043042 in words is "one hundred twenty-one billion, four hundred forty-two million, forty-three thousand, forty-two".