121040263 has 4 divisors (see below), whose sum is σ = 121076208. Its totient is φ = 121004320.

The previous prime is 121040261. The next prime is 121040273. The reversal of 121040263 is 362040121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362040121 = 109 ⋅3321469.

It is a cyclic number.

It is not a de Polignac number, because 121040263 - 2¹ = 121040261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121040263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12331 + ... + 19852.

It is an arithmetic number, because the mean of its divisors is an integer number (30269052).

Almost surely, 2^121040263 is an apocalyptic number.

121040263 is a deficient number, since it is larger than the sum of its proper divisors (35945).

121040263 is an equidigital number, since it uses as much as digits as its factorization.

121040263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35944.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 121040263 is about 11001.8299841435. The cubic root of 121040263 is about 494.6635989349.

Adding to 121040263 its reverse (362040121), we get a palindrome (483080384).

The spelling of 121040263 in words is "one hundred twenty-one million, forty thousand, two hundred sixty-three".