121310504 has 64 divisors (see below), whose sum is σ = 278899200. Its totient is φ = 48282624.

The previous prime is 121310503. The next prime is 121310537. The reversal of 121310504 is 405013121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (121310503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74402 + ... + 76014.

It is an arithmetic number, because the mean of its divisors is an integer number (4357800).

Almost surely, 2^121310504 is an apocalyptic number.

121310504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121310504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139449600).

121310504 is an abundant number, since it is smaller than the sum of its proper divisors (157588696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121310504 is a wasteful number, since it uses less digits than its factorization.

121310504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121310504 is about 11014.1047752416. The cubic root of 121310504 is about 495.0314628167.

Adding to 121310504 its reverse (405013121), we get a palindrome (526323625).

The spelling of 121310504 in words is "one hundred twenty-one million, three hundred ten thousand, five hundred four".