1123239 has 16 divisors (see below), whose sum is σ = 1636992. Its totient is φ = 680928.

The previous prime is 1123231. The next prime is 1123247. The reversal of 1123239 is 9323211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1123231) and next prime (1123247).

It is not a de Polignac number, because 1123239 - 2³ = 1123231 is a prime.

It is a super-2 number, since 2×1123239² = 2523331702242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3064 + ... + 3410.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2^1123239 is an apocalyptic number.

1123239 is a deficient number, since it is larger than the sum of its proper divisors (513753).

1123239 is a wasteful number, since it uses less digits than its factorization.

1123239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446.

The product of its digits is 324, while the sum is 21.

The square root of 1123239 is about 1059.8297033014. The cubic root of 1123239 is about 103.9498957369.

The spelling of 1123239 in words is "one million, one hundred twenty-three thousand, two hundred thirty-nine".