121415263 has 8 divisors (see below), whose sum is σ = 128373120. Its totient is φ = 114514200.

The previous prime is 121415219. The next prime is 121415293. The reversal of 121415263 is 362514121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121415263 - 2⁹ = 121414751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121415293) 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 7 ways as a sum of consecutive naturals, for example, 9763 + ... + 18388.

It is an arithmetic number, because the mean of its divisors is an integer number (16046640).

Almost surely, 2^121415263 is an apocalyptic number.

121415263 is a deficient number, since it is larger than the sum of its proper divisors (6957857).

121415263 is a wasteful number, since it uses less digits than its factorization.

121415263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28397.

The product of its digits is 1440, while the sum is 25.

The square root of 121415263 is about 11018.8594237335. The cubic root of 121415263 is about 495.1739184125.

Adding to 121415263 its reverse (362514121), we get a palindrome (483929384).

The spelling of 121415263 in words is "one hundred twenty-one million, four hundred fifteen thousand, two hundred sixty-three".