4209078490121 has 4 divisors (see below), whose sum is σ = 4210110384000. Its totient is φ = 4208046596244.

The previous prime is 4209078490063. The next prime is 4209078490153. The reversal of 4209078490121 is 1210948709024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4209078490121 - 2²² = 4209074295817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4209078490021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515940821 + ... + 515948978.

It is an arithmetic number, because the mean of its divisors is an integer number (1052527596000).

Almost surely, 2^{4209078490121} is an apocalyptic number.

It is an amenable number.

4209078490121 is a deficient number, since it is larger than the sum of its proper divisors (1031893879).

4209078490121 is a wasteful number, since it uses less digits than its factorization.

4209078490121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031893878.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 4209078490121 in words is "four trillion, two hundred nine billion, seventy-eight million, four hundred ninety thousand, one hundred twenty-one".