2629078421 has 2 divisors, whose sum is σ = 2629078422. Its totient is φ = 2629078420.

The previous prime is 2629078381. The next prime is 2629078427. The reversal of 2629078421 is 1248709262.

2629078421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2518534225 + 110544196 = 50185^2 + 10514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2629078421 - 2¹⁰ = 2629077397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2629078427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314539210 + 1314539211.

It is an arithmetic number, because the mean of its divisors is an integer number (1314539211).

Almost surely, 2^2629078421 is an apocalyptic number.

It is an amenable number.

2629078421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2629078421 is an equidigital number, since it uses as much as digits as its factorization.

2629078421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 2629078421 is about 51274.5396956423. The cubic root of 2629078421 is about 1380.1761346632.

The spelling of 2629078421 in words is "two billion, six hundred twenty-nine million, seventy-eight thousand, four hundred twenty-one".