121840473 has 16 divisors (see below), whose sum is σ = 165583872. Its totient is φ = 79674000.

The previous prime is 121840471. The next prime is 121840489. The reversal of 121840473 is 374048121.

It is not a de Polignac number, because 121840473 - 2¹ = 121840471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121840473.

It is not an unprimeable number, because it can be changed into a prime (121840471) 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, 43588 + ... + 46298.

It is an arithmetic number, because the mean of its divisors is an integer number (10348992).

Almost surely, 2^121840473 is an apocalyptic number.

It is an amenable number.

121840473 is a deficient number, since it is larger than the sum of its proper divisors (43743399).

121840473 is a wasteful number, since it uses less digits than its factorization.

121840473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 121840473 is about 11038.1372069747. The cubic root of 121840473 is about 495.7512966332.

Adding to 121840473 its reverse (374048121), we get a palindrome (495888594).

The spelling of 121840473 in words is "one hundred twenty-one million, eight hundred forty thousand, four hundred seventy-three".