404123262402121 has 4 divisors (see below), whose sum is σ = 406543162177152. Its totient is φ = 401703362627092.

The previous prime is 404123262402107. The next prime is 404123262402131. The reversal of 404123262402121 is 121204262321404.

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 404123262402121 - 2⁵ = 404123262402089 is a prime.

It is a super-2 number, since 2×404123262402121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404123262402131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209949887265 + ... + 1209949887598.

It is an arithmetic number, because the mean of its divisors is an integer number (101635790544288).

Almost surely, 2^{404123262402121} is an apocalyptic number.

It is an amenable number.

404123262402121 is a deficient number, since it is larger than the sum of its proper divisors (2419899775031).

404123262402121 is a wasteful number, since it uses less digits than its factorization.

404123262402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419899775030.

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 404123262402121 in words is "four hundred four trillion, one hundred twenty-three billion, two hundred sixty-two million, four hundred two thousand, one hundred twenty-one".