121004643 has 16 divisors (see below), whose sum is σ = 163116800. Its totient is φ = 79786080.

The previous prime is 121004641. The next prime is 121004651. The reversal of 121004643 is 346400121.

It is not a de Polignac number, because 121004643 - 2¹ = 121004641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121004641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182733 + ... + 183393.

It is an arithmetic number, because the mean of its divisors is an integer number (10194800).

Almost surely, 2^121004643 is an apocalyptic number.

121004643 is a deficient number, since it is larger than the sum of its proper divisors (42112157).

121004643 is a wasteful number, since it uses less digits than its factorization.

121004643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 121004643 is about 11000.2110434300. The cubic root of 121004643 is about 494.6150706032.

Adding to 121004643 its reverse (346400121), we get a palindrome (467404764).

The spelling of 121004643 in words is "one hundred twenty-one million, four thousand, six hundred forty-three".