1235281 has 2 divisors, whose sum is σ = 1235282. Its totient is φ = 1235280.

The previous prime is 1235263. The next prime is 1235287. The reversal of 1235281 is 1825321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 25281 = 1100^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235281 - 2⁵ = 1235249 is a prime.

It is a super-2 number, since 2×1235281² = 3051838297922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1235287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617640 + 617641.

It is an arithmetic number, because the mean of its divisors is an integer number (617641).

2^1235281 is an apocalyptic number.

It is an amenable number.

1235281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235281 is an equidigital number, since it uses as much as digits as its factorization.

1235281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 1235281 is about 1111.4319592310. The cubic root of 1235281 is about 107.2972489927.

The spelling of 1235281 in words is "one million, two hundred thirty-five thousand, two hundred eighty-one".