121849143 has 32 divisors (see below), whose sum is σ = 180897024. Its totient is φ = 72479232.

The previous prime is 121849087. The next prime is 121849151. The reversal of 121849143 is 341948121.

It is a happy number.

It is not a de Polignac number, because 121849143 - 2⁸ = 121848887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121849163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189180 + ... + 189822.

It is an arithmetic number, because the mean of its divisors is an integer number (5653032).

Almost surely, 2^121849143 is an apocalyptic number.

121849143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121849143 is a deficient number, since it is larger than the sum of its proper divisors (59047881).

121849143 is a wasteful number, since it uses less digits than its factorization.

121849143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its digits is 6912, while the sum is 33.

The square root of 121849143 is about 11038.5299292977. The cubic root of 121849143 is about 495.7630553472.

The spelling of 121849143 in words is "one hundred twenty-one million, eight hundred forty-nine thousand, one hundred forty-three".