121607743 has 4 divisors (see below), whose sum is σ = 122092488. Its totient is φ = 121123000.

The previous prime is 121607729. The next prime is 121607807. The reversal of 121607743 is 347706121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121607743 - 2⁵ = 121607711 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 (121607713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241996 + ... + 242497.

It is an arithmetic number, because the mean of its divisors is an integer number (30523122).

Almost surely, 2^121607743 is an apocalyptic number.

121607743 is a deficient number, since it is larger than the sum of its proper divisors (484745).

121607743 is an equidigital number, since it uses as much as digits as its factorization.

121607743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484744.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 121607743 is about 11027.5900812462. The cubic root of 121607743 is about 495.4354471860.

The spelling of 121607743 in words is "one hundred twenty-one million, six hundred seven thousand, seven hundred forty-three".