121357743 has 24 divisors (see below), whose sum is σ = 179173008. Its totient is φ = 72631296.

The previous prime is 121357727. The next prime is 121357783. The reversal of 121357743 is 347753121.

It is not a de Polignac number, because 121357743 - 2⁴ = 121357727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121357723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52255 + ... + 54527.

It is an arithmetic number, because the mean of its divisors is an integer number (7465542).

Almost surely, 2^121357743 is an apocalyptic number.

121357743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121357743 is a deficient number, since it is larger than the sum of its proper divisors (57815265).

121357743 is a wasteful number, since it uses less digits than its factorization.

121357743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363 (or 2326 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 121357743 is about 11016.2490440258. The cubic root of 121357743 is about 495.0957105000.

The spelling of 121357743 in words is "one hundred twenty-one million, three hundred fifty-seven thousand, seven hundred forty-three".