773940121 has 4 divisors (see below), whose sum is σ = 779134500. Its totient is φ = 768745744.

The previous prime is 773940109. The next prime is 773940127. The reversal of 773940121 is 121049377.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25644096 + 748296025 = 5064^2 + 27355^2 .

It is a cyclic number.

It is not a de Polignac number, because 773940121 - 2⁹ = 773939609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (773940127) 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, 2596966 + ... + 2597263.

It is an arithmetic number, because the mean of its divisors is an integer number (194783625).

Almost surely, 2^773940121 is an apocalyptic number.

It is an amenable number.

773940121 is a deficient number, since it is larger than the sum of its proper divisors (5194379).

773940121 is a wasteful number, since it uses less digits than its factorization.

773940121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194378.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 773940121 is about 27819.7793125682. The cubic root of 773940121 is about 918.1263541521.

Adding to 773940121 its reverse (121049377), we get a palindrome (894989498).

The spelling of 773940121 in words is "seven hundred seventy-three million, nine hundred forty thousand, one hundred twenty-one".