121144342 has 32 divisors (see below), whose sum is σ = 215424000. Its totient is φ = 50479200.

The previous prime is 121144337. The next prime is 121144343. The reversal of 121144342 is 243441121.

It is a happy number.

It is a super-3 number, since 3×121144342³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121144343) 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 in 15 ways as a sum of consecutive naturals, for example, 8284 + ... + 17632.

It is an arithmetic number, because the mean of its divisors is an integer number (6732000).

Almost surely, 2^121144342 is an apocalyptic number.

121144342 is a deficient number, since it is larger than the sum of its proper divisors (94279658).

121144342 is a wasteful number, since it uses less digits than its factorization.

121144342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9412.

The product of its digits is 768, while the sum is 22.

The square root of 121144342 is about 11006.5590444971. The cubic root of 121144342 is about 494.8053405943.

Adding to 121144342 its reverse (243441121), we get a palindrome (364585463).

The spelling of 121144342 in words is "one hundred twenty-one million, one hundred forty-four thousand, three hundred forty-two".