121142242 has 24 divisors (see below), whose sum is σ = 205334784. Its totient is φ = 53477424.

The previous prime is 121142237. The next prime is 121142243. The reversal of 121142242 is 242241121.

It is a super-3 number, since 3×121142242³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121142243) 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, 18 + ... + 15565.

It is an arithmetic number, because the mean of its divisors is an integer number (8555616).

Almost surely, 2^121142242 is an apocalyptic number.

121142242 is a deficient number, since it is larger than the sum of its proper divisors (84192542).

121142242 is a wasteful number, since it uses less digits than its factorization.

121142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15634 (or 15621 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 121142242 is about 11006.4636464216. The cubic root of 121142242 is about 494.8024814782.

Adding to 121142242 its reverse (242241121), we get a palindrome (363383363).

The spelling of 121142242 in words is "one hundred twenty-one million, one hundred forty-two thousand, two hundred forty-two".