1123442691 has 16 divisors (see below), whose sum is σ = 1713268224. Its totient is φ = 641458944.

The previous prime is 1123442669. The next prime is 1123442693. The reversal of 1123442691 is 1962443211.

It is not a de Polignac number, because 1123442691 - 2¹⁰ = 1123441667 is a prime.

It is a super-2 number, since 2×1123442691² = 2524246959922642962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123442693) 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, 6835 + ... + 47891.

It is an arithmetic number, because the mean of its divisors is an integer number (107079264).

Almost surely, 2^1123442691 is an apocalyptic number.

1123442691 is a deficient number, since it is larger than the sum of its proper divisors (589825533).

1123442691 is a wasteful number, since it uses less digits than its factorization.

1123442691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42370.

The product of its digits is 10368, while the sum is 33.

The square root of 1123442691 is about 33517.7966310436. The cubic root of 1123442691 is about 1039.5617886937.

The spelling of 1123442691 in words is "one billion, one hundred twenty-three million, four hundred forty-two thousand, six hundred ninety-one".