121140324 has 18 divisors (see below), whose sum is σ = 306215910. Its totient is φ = 40380096.

The previous prime is 121140323. The next prime is 121140353. The reversal of 121140324 is 423041121.

It can be written as a sum of positive squares in only one way, i.e., 84052224 + 37088100 = 9168^2 + 6090^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×121140324³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121140297 and 121140306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121140323) 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 5 ways as a sum of consecutive naturals, for example, 1682469 + ... + 1682540.

It is an arithmetic number, because the mean of its divisors is an integer number (17011995).

Almost surely, 2^121140324 is an apocalyptic number.

It is an amenable number.

121140324 is an abundant number, since it is smaller than the sum of its proper divisors (185075586).

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

121140324 is a wasteful number, since it uses less digits than its factorization.

121140324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365019 (or 3365014 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121140324 is about 11006.3765154568. The cubic root of 121140324 is about 494.7998701232.

Adding to 121140324 its reverse (423041121), we get a palindrome (544181445).

The spelling of 121140324 in words is "one hundred twenty-one million, one hundred forty thousand, three hundred twenty-four".