405010121 has 4 divisors (see below), whose sum is σ = 405603792. Its totient is φ = 404416452.

The previous prime is 405010097. The next prime is 405010129. The reversal of 405010121 is 121010504.

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 405010121 - 2¹⁰ = 405009097 is a prime.

It is a super-2 number, since 2×405010121² = 328066396224869282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405010096 and 405010105.

It is not an unprimeable number, because it can be changed into a prime (405010129) 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, 295811 + ... + 297176.

It is an arithmetic number, because the mean of its divisors is an integer number (101400948).

Almost surely, 2^405010121 is an apocalyptic number.

It is an amenable number.

405010121 is a deficient number, since it is larger than the sum of its proper divisors (593671).

405010121 is an equidigital number, since it uses as much as digits as its factorization.

405010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593670.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 405010121 is about 20124.8632541938. The cubic root of 405010121 is about 739.8697853422.

Adding to 405010121 its reverse (121010504), we get a palindrome (526020625).

The spelling of 405010121 in words is "four hundred five million, ten thousand, one hundred twenty-one".