281426429 has 2 divisors, whose sum is σ = 281426430. Its totient is φ = 281426428.

The previous prime is 281426417. The next prime is 281426437. The reversal of 281426429 is 924624182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258405625 + 23020804 = 16075^2 + 4798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281426429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 281426392 and 281426401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281426479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140713214 + 140713215.

It is an arithmetic number, because the mean of its divisors is an integer number (140713215).

Almost surely, 2^281426429 is an apocalyptic number.

It is an amenable number.

281426429 is a deficient number, since it is larger than the sum of its proper divisors (1).

281426429 is an equidigital number, since it uses as much as digits as its factorization.

281426429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 281426429 is about 16775.7691030844. The cubic root of 281426429 is about 655.3223198512.

The spelling of 281426429 in words is "two hundred eighty-one million, four hundred twenty-six thousand, four hundred twenty-nine".