121804705 has 16 divisors (see below), whose sum is σ = 159988608. Its totient is φ = 88288000.

The previous prime is 121804679. The next prime is 121804723. The reversal of 121804705 is 507408121.

It is not a de Polignac number, because 121804705 - 2¹³ = 121796513 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 13545 + ... + 20665.

It is an arithmetic number, because the mean of its divisors is an integer number (9999288).

Almost surely, 2^121804705 is an apocalyptic number.

It is an amenable number.

121804705 is a deficient number, since it is larger than the sum of its proper divisors (38183903).

121804705 is a wasteful number, since it uses less digits than its factorization.

121804705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 121804705 is about 11036.5168871343. The cubic root of 121804705 is about 495.7027802758.

The spelling of 121804705 in words is "one hundred twenty-one million, eight hundred four thousand, seven hundred five".