121143740 has 12 divisors (see below), whose sum is σ = 254401896. Its totient is φ = 48457488.

The previous prime is 121143731. The next prime is 121143761. The reversal of 121143740 is 47341121.

It is a happy number.

It is a super-3 number, since 3×121143740³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028574 + ... + 3028613.

It is an arithmetic number, because the mean of its divisors is an integer number (21200158).

Almost surely, 2^121143740 is an apocalyptic number.

121143740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121143740 is an abundant number, since it is smaller than the sum of its proper divisors (133258156).

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

121143740 is a wasteful number, since it uses less digits than its factorization.

121143740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057196 (or 6057194 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 121143740 is about 11006.5316971333. The cubic root of 121143740 is about 494.8045209844.

Adding to 121143740 its reverse (47341121), we get a palindrome (168484861).

The spelling of 121143740 in words is "one hundred twenty-one million, one hundred forty-three thousand, seven hundred forty".