426128629 has 2 divisors, whose sum is σ = 426128630. Its totient is φ = 426128628.

The previous prime is 426128617. The next prime is 426128657. The reversal of 426128629 is 926821624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249956100 + 176172529 = 15810^2 + 13273^2 .

It is a cyclic number.

It is not a de Polignac number, because 426128629 - 2⁵ = 426128597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 426128591 and 426128600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426128609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213064314 + 213064315.

It is an arithmetic number, because the mean of its divisors is an integer number (213064315).

Almost surely, 2^426128629 is an apocalyptic number.

It is an amenable number.

426128629 is a deficient number, since it is larger than the sum of its proper divisors (1).

426128629 is an equidigital number, since it uses as much as digits as its factorization.

426128629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 426128629 is about 20642.8832530730. The cubic root of 426128629 is about 752.5122444780.

The spelling of 426128629 in words is "four hundred twenty-six million, one hundred twenty-eight thousand, six hundred twenty-nine".