2405412021 has 8 divisors (see below), whose sum is σ = 3207477600. Its totient is φ = 1603477232.

The previous prime is 2405412019. The next prime is 2405412029. The reversal of 2405412021 is 1202145042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2405412021 - 2¹ = 2405412019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405412029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24526 + ... + 73568.

It is an arithmetic number, because the mean of its divisors is an integer number (400934700).

Almost surely, 2^2405412021 is an apocalyptic number.

It is an amenable number.

2405412021 is a deficient number, since it is larger than the sum of its proper divisors (802065579).

2405412021 is a wasteful number, since it uses less digits than its factorization.

2405412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65395.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2405412021 is about 49044.9999592211. Note that the first 4 decimals coincide. The cubic root of 2405412021 is about 1339.8715294151.

Adding to 2405412021 its reverse (1202145042), we get a palindrome (3607557063).

The spelling of 2405412021 in words is "two billion, four hundred five million, four hundred twelve thousand, twenty-one".