121743077 has 4 divisors (see below), whose sum is σ = 122948556. Its totient is φ = 120537600.

The previous prime is 121743053. The next prime is 121743079. The reversal of 121743077 is 770347121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 770347121 = 191 ⋅4033231.

It can be written as a sum of positive squares in 2 ways, for example, as 103347556 + 18395521 = 10166^2 + 4289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121743077 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 (121743079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602588 + ... + 602789.

It is an arithmetic number, because the mean of its divisors is an integer number (30737139).

Almost surely, 2^121743077 is an apocalyptic number.

It is an amenable number.

121743077 is a deficient number, since it is larger than the sum of its proper divisors (1205479).

121743077 is a wasteful number, since it uses less digits than its factorization.

121743077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205478.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 121743077 is about 11033.7245298222. The cubic root of 121743077 is about 495.6191646645.

It can be divided in two parts, 12174 and 3077, that added together give a palindrome (15251).

The spelling of 121743077 in words is "one hundred twenty-one million, seven hundred forty-three thousand, seventy-seven".