121312342 has 4 divisors (see below), whose sum is σ = 181968516. Its totient is φ = 60656170.

The previous prime is 121312339. The next prime is 121312361. The reversal of 121312342 is 243213121.

It is a happy number.

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

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, 30328084 + ... + 30328087.

It is an arithmetic number, because the mean of its divisors is an integer number (45492129).

Almost surely, 2^121312342 is an apocalyptic number.

121312342 is a deficient number, since it is larger than the sum of its proper divisors (60656174).

121312342 is an equidigital number, since it uses as much as digits as its factorization.

121312342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60656173.

The product of its digits is 288, while the sum is 19.

The square root of 121312342 is about 11014.1882133909. The cubic root of 121312342 is about 495.0339629113.

Adding to 121312342 its reverse (243213121), we get a palindrome (364525463).

The spelling of 121312342 in words is "one hundred twenty-one million, three hundred twelve thousand, three hundred forty-two".