121145342 has 4 divisors (see below), whose sum is σ = 181718016. Its totient is φ = 60572670.

The previous prime is 121145341. The next prime is 121145377. The reversal of 121145342 is 243541121.

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

It is a super-3 number, since 3×121145342³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121145341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30286334 + ... + 30286337.

It is an arithmetic number, because the mean of its divisors is an integer number (45429504).

Almost surely, 2^121145342 is an apocalyptic number.

121145342 is a deficient number, since it is larger than the sum of its proper divisors (60572674).

121145342 is an equidigital number, since it uses as much as digits as its factorization.

121145342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60572673.

The product of its digits is 960, while the sum is 23.

The square root of 121145342 is about 11006.6044718614. The cubic root of 121145342 is about 494.8067020665.

Adding to 121145342 its reverse (243541121), we get a palindrome (364686463).

The spelling of 121145342 in words is "one hundred twenty-one million, one hundred forty-five thousand, three hundred forty-two".