121440112342 has 4 divisors (see below), whose sum is σ = 182160168516. Its totient is φ = 60720056170.

The previous prime is 121440112333. The next prime is 121440112393. The reversal of 121440112342 is 243211044121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243211044121 = 90371 ⋅2691251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30360028084 + ... + 30360028087.

It is an arithmetic number, because the mean of its divisors is an integer number (45540042129).

Almost surely, 2^121440112342 is an apocalyptic number.

121440112342 is a deficient number, since it is larger than the sum of its proper divisors (60720056174).

121440112342 is an equidigital number, since it uses as much as digits as its factorization.

121440112342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60720056173.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121440112342 its reverse (243211044121), we get a palindrome (364651156463).

The spelling of 121440112342 in words is "one hundred twenty-one billion, four hundred forty million, one hundred twelve thousand, three hundred forty-two".