121143140 has 12 divisors (see below), whose sum is σ = 254400636. Its totient is φ = 48457248.

The previous prime is 121143101. The next prime is 121143149. The reversal of 121143140 is 41341121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32444416 + 88698724 = 5696^2 + 9418^2 .

It is a super-3 number, since 3×121143140³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121143149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028559 + ... + 3028598.

It is an arithmetic number, because the mean of its divisors is an integer number (21200053).

Almost surely, 2^121143140 is an apocalyptic number.

121143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121143140 is an abundant number, since it is smaller than the sum of its proper divisors (133257496).

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

121143140 is a wasteful number, since it uses less digits than its factorization.

121143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057166 (or 6057164 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 121143140 is about 11006.5044405570. The cubic root of 121143140 is about 494.8037040947.

Adding to 121143140 its reverse (41341121), we get a palindrome (162484261).

The spelling of 121143140 in words is "one hundred twenty-one million, one hundred forty-three thousand, one hundred forty".