1154239 has 2 divisors, whose sum is σ = 1154240. Its totient is φ = 1154238.

The previous prime is 1154233. The next prime is 1154243. The reversal of 1154239 is 9324511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1154239 - 2⁵ = 1154207 is a prime.

1154239 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577119 + 577120.

It is an arithmetic number, because the mean of its divisors is an integer number (577120).

2^1154239 is an apocalyptic number.

1154239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154239 is an equidigital number, since it uses as much as digits as its factorization.

1154239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 1154239 is about 1074.3551554305. The cubic root of 1154239 is about 104.8975266312.

The spelling of 1154239 in words is "one million, one hundred fifty-four thousand, two hundred thirty-nine".