2405121000 has 64 divisors (see below), whose sum is σ = 7503986880. Its totient is φ = 641364800.

The previous prime is 2405120983. The next prime is 2405121001. The reversal of 2405121000 is 1215042.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2405121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397854 + ... + 403853.

It is an arithmetic number, because the mean of its divisors is an integer number (117249795).

Almost surely, 2^2405121000 is an apocalyptic number.

2405121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405121000 is an abundant number, since it is smaller than the sum of its proper divisors (5098865880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2405121000 is a wasteful number, since it uses less digits than its factorization.

2405121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801731 (or 801717 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2405121000 is about 49042.0329921181. The cubic root of 2405121000 is about 1339.8174920367.

Adding to 2405121000 its reverse (1215042), we get a palindrome (2406336042).

The spelling of 2405121000 in words is "two billion, four hundred five million, one hundred twenty-one thousand".