1123919 has 2 divisors, whose sum is σ = 1123920. Its totient is φ = 1123918.

The previous prime is 1123909. The next prime is 1123931. The reversal of 1123919 is 9193211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123919 - 2¹² = 1119823 is a prime.

It is a super-2 number, since 2×1123919² = 2526387837122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561959 + 561960.

It is an arithmetic number, because the mean of its divisors is an integer number (561960).

2^1123919 is an apocalyptic number.

1123919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123919 is an equidigital number, since it uses as much as digits as its factorization.

1123919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 26.

The square root of 1123919 is about 1060.1504610196. The cubic root of 1123919 is about 103.9708683199.

The spelling of 1123919 in words is "one million, one hundred twenty-three thousand, nine hundred nineteen".