2521426340 has 12 divisors (see below), whose sum is σ = 5294995356. Its totient is φ = 1008570528.

The previous prime is 2521426333. The next prime is 2521426357. The reversal of 2521426340 is 436241252.

It can be written as a sum of positive squares in 2 ways, for example, as 1588979044 + 932447296 = 39862^2 + 30536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63035639 + ... + 63035678.

It is an arithmetic number, because the mean of its divisors is an integer number (441249613).

Almost surely, 2^2521426340 is an apocalyptic number.

2521426340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521426340 is an abundant number, since it is smaller than the sum of its proper divisors (2773569016).

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

2521426340 is a wasteful number, since it uses less digits than its factorization.

2521426340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126071326 (or 126071324 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2521426340 is about 50213.8062687942. The cubic root of 2521426340 is about 1361.0751194419.

Adding to 2521426340 its reverse (436241252), we get a palindrome (2957667592).

The spelling of 2521426340 in words is "two billion, five hundred twenty-one million, four hundred twenty-six thousand, three hundred forty".