121451143 has 16 divisors (see below), whose sum is σ = 138311712. Its totient is φ = 105664000.

The previous prime is 121451107. The next prime is 121451147. The reversal of 121451143 is 341154121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121451143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451147) 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, 21363 + ... + 26443.

It is an arithmetic number, because the mean of its divisors is an integer number (8644482).

Almost surely, 2^121451143 is an apocalyptic number.

121451143 is a deficient number, since it is larger than the sum of its proper divisors (16860569).

121451143 is a wasteful number, since it uses less digits than its factorization.

121451143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186.

The product of its digits is 480, while the sum is 22.

The square root of 121451143 is about 11020.4874211625. The cubic root of 121451143 is about 495.2226906725. Note that the first 3 decimals are identical.

The spelling of 121451143 in words is "one hundred twenty-one million, four hundred fifty-one thousand, one hundred forty-three".