121241142 has 96 divisors (see below), whose sum is σ = 303713280. Its totient is φ = 34594560.

The previous prime is 121241137. The next prime is 121241143. The reversal of 121241142 is 241142121.

121241142 is a `hidden beast` number, since 1 + 212 + 411 + 42 = 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 (121241143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359598 + ... + 359934.

It is an arithmetic number, because the mean of its divisors is an integer number (3163680).

Almost surely, 2^121241142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121241142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151856640).

121241142 is an abundant number, since it is smaller than the sum of its proper divisors (182472138).

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

121241142 is a wasteful number, since it uses less digits than its factorization.

121241142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 455 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 121241142 is about 11010.9555443658. The cubic root of 121241142 is about 494.9370963838.

Adding to 121241142 its reverse (241142121), we get a palindrome (362383263).

The spelling of 121241142 in words is "one hundred twenty-one million, two hundred forty-one thousand, one hundred forty-two".