121323765 has 16 divisors (see below), whose sum is σ = 197409600. Its totient is φ = 63608832.

The previous prime is 121323751. The next prime is 121323823. The reversal of 121323765 is 567323121.

It is not a de Polignac number, because 121323765 - 2⁶ = 121323701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67660 + ... + 69429.

It is an arithmetic number, because the mean of its divisors is an integer number (12338100).

Almost surely, 2^121323765 is an apocalyptic number.

121323765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121323765 is a deficient number, since it is larger than the sum of its proper divisors (76085835).

121323765 is a wasteful number, since it uses less digits than its factorization.

121323765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137156.

The product of its digits is 7560, while the sum is 30.

The square root of 121323765 is about 11014.7067596010. The cubic root of 121323765 is about 495.0495002023.

Adding to 121323765 its reverse (567323121), we get a palindrome (688646886).

The spelling of 121323765 in words is "one hundred twenty-one million, three hundred twenty-three thousand, seven hundred sixty-five".