121768342 has 4 divisors (see below), whose sum is σ = 182652516. Its totient is φ = 60884170.

The previous prime is 121768333. The next prime is 121768343. The reversal of 121768342 is 243867121.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×121768342² = 29655058226857928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121768298 and 121768307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121768343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30442084 + ... + 30442087.

It is an arithmetic number, because the mean of its divisors is an integer number (45663129).

Almost surely, 2^121768342 is an apocalyptic number.

121768342 is a deficient number, since it is larger than the sum of its proper divisors (60884174).

121768342 is an equidigital number, since it uses as much as digits as its factorization.

121768342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60884173.

The product of its digits is 16128, while the sum is 34.

The square root of 121768342 is about 11034.8693694126. The cubic root of 121768342 is about 495.6534471125.

The spelling of 121768342 in words is "one hundred twenty-one million, seven hundred sixty-eight thousand, three hundred forty-two".