121731743 has 8 divisors (see below), whose sum is σ = 139337760. Its totient is φ = 104179680.

The previous prime is 121731721. The next prime is 121731767. The reversal of 121731743 is 347137121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121731743 - 2²⁶ = 54622879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121731703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8528 + ... + 17781.

It is an arithmetic number, because the mean of its divisors is an integer number (17417220).

Almost surely, 2^121731743 is an apocalyptic number.

121731743 is a deficient number, since it is larger than the sum of its proper divisors (17606017).

121731743 is an equidigital number, since it uses as much as digits as its factorization.

121731743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26977.

The product of its digits is 3528, while the sum is 29.

The square root of 121731743 is about 11033.2109107005. The cubic root of 121731743 is about 495.6037838531.

Adding to 121731743 its reverse (347137121), we get a palindrome (468868864).

The spelling of 121731743 in words is "one hundred twenty-one million, seven hundred thirty-one thousand, seven hundred forty-three".