121541142 has 32 divisors (see below), whose sum is σ = 251919360. Its totient is φ = 39051360.

The previous prime is 121541141. The next prime is 121541191. The reversal of 121541142 is 241145121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121541141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51484 + ... + 53792.

It is an arithmetic number, because the mean of its divisors is an integer number (7872480).

Almost surely, 2^121541142 is an apocalyptic number.

121541142 is an abundant number, since it is smaller than the sum of its proper divisors (130378218).

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

121541142 is a wasteful number, since it uses less digits than its factorization.

121541142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its digits is 320, while the sum is 21.

The square root of 121541142 is about 11024.5699235843. The cubic root of 121541142 is about 495.3449855071.

Adding to 121541142 its reverse (241145121), we get a palindrome (362686263).

The spelling of 121541142 in words is "one hundred twenty-one million, five hundred forty-one thousand, one hundred forty-two".