2721078427 has 2 divisors, whose sum is σ = 2721078428. Its totient is φ = 2721078426.

The previous prime is 2721078419. The next prime is 2721078443. The reversal of 2721078427 is 7248701272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2721078427 - 2³ = 2721078419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2721078427.

It is not a weakly prime, because it can be changed into another prime (2721078467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360539213 + 1360539214.

It is an arithmetic number, because the mean of its divisors is an integer number (1360539214).

Almost surely, 2^2721078427 is an apocalyptic number.

2721078427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721078427 is an equidigital number, since it uses as much as digits as its factorization.

2721078427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 40.

The square root of 2721078427 is about 52163.9571639269. The cubic root of 2721078427 is about 1396.0908682364.

Adding to 2721078427 its reverse (7248701272), we get a palindrome (9969779699).

The spelling of 2721078427 in words is "two billion, seven hundred twenty-one million, seventy-eight thousand, four hundred twenty-seven".