121311342 has 24 divisors (see below), whose sum is σ = 268955544. Its totient is φ = 39496464.

The previous prime is 121311341. The next prime is 121311349. The reversal of 121311342 is 243113121.

121311342 is a `hidden beast` number, since 12 + 1 + 311 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77593 + ... + 79140.

It is an arithmetic number, because the mean of its divisors is an integer number (11206481).

Almost surely, 2^121311342 is an apocalyptic number.

121311342 is an abundant number, since it is smaller than the sum of its proper divisors (147644202).

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

121311342 is a wasteful number, since it uses less digits than its factorization.

121311342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156784 (or 156781 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 121311342 is about 11014.1428173054. The cubic root of 121311342 is about 495.0326026888.

Adding to 121311342 its reverse (243113121), we get a palindrome (364424463).

The spelling of 121311342 in words is "one hundred twenty-one million, three hundred eleven thousand, three hundred forty-two".