121004140 has 12 divisors (see below), whose sum is σ = 254108736. Its totient is φ = 48401648.

The previous prime is 121004137. The next prime is 121004167. The reversal of 121004140 is 41400121.

It is a self number, because there is not a number n which added to its sum of digits gives 121004140.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3025084 + ... + 3025123.

It is an arithmetic number, because the mean of its divisors is an integer number (21175728).

Almost surely, 2^121004140 is an apocalyptic number.

121004140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121004140 is an abundant number, since it is smaller than the sum of its proper divisors (133104596).

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

121004140 is a wasteful number, since it uses less digits than its factorization.

121004140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050216 (or 6050214 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121004140 is about 11000.1881802086. The cubic root of 121004140 is about 494.6143852528.

Adding to 121004140 its reverse (41400121), we get a palindrome (162404261).

The spelling of 121004140 in words is "one hundred twenty-one million, four thousand, one hundred forty".