2407121905 has 8 divisors (see below), whose sum is σ = 2891449512. Its totient is φ = 1923762048.

The previous prime is 2407121861. The next prime is 2407121933. The reversal of 2407121905 is 5091217042.

It can be written as a sum of positive squares in 4 ways, for example, as 1072169536 + 1334952369 = 32744^2 + 36537^2 .

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 2407121905 - 2¹³ = 2407113713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 236452 + ... + 246421.

It is an arithmetic number, because the mean of its divisors is an integer number (361431189).

Almost surely, 2^2407121905 is an apocalyptic number.

It is an amenable number.

2407121905 is a deficient number, since it is larger than the sum of its proper divisors (484327607).

2407121905 is an equidigital number, since it uses as much as digits as its factorization.

2407121905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483875.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2407121905 is about 49062.4286496296. The cubic root of 2407121905 is about 1340.1889361944.

Adding to 2407121905 its reverse (5091217042), we get a palindrome (7498338947).

The spelling of 2407121905 in words is "two billion, four hundred seven million, one hundred twenty-one thousand, nine hundred five".