2660426121 has 8 divisors (see below), whose sum is σ = 3550121344. Its totient is φ = 1772174160.

The previous prime is 2660426051. The next prime is 2660426143. The reversal of 2660426121 is 1216240662.

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

It is not a de Polignac number, because 2660426121 - 2¹⁷ = 2660295049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660426191) 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, 356506 + ... + 363891.

It is an arithmetic number, because the mean of its divisors is an integer number (443765168).

Almost surely, 2^2660426121 is an apocalyptic number.

It is an amenable number.

2660426121 is a deficient number, since it is larger than the sum of its proper divisors (889695223).

2660426121 is a wasteful number, since it uses less digits than its factorization.

2660426121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721631.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2660426121 is about 51579.3187333838. The cubic root of 2660426121 is about 1385.6399655989.

Adding to 2660426121 its reverse (1216240662), we get a palindrome (3876666783).

It can be divided in two parts, 26604 and 26121, that added together give a palindrome (52725).

The spelling of 2660426121 in words is "two billion, six hundred sixty million, four hundred twenty-six thousand, one hundred twenty-one".