1123657441 has 3 divisors (see below), whose sum is σ = 1123690963. Its totient is φ = 1123623920.

The previous prime is 1123657427. The next prime is 1123657453. The reversal of 1123657441 is 1447563211.

The square root of 1123657441 is 33521.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 312547041 + 811110400 = 17679^2 + 28480^2 .

It is not a de Polignac number, because 1123657441 - 2¹³ = 1123649249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123657397 and 1123657406.

It is not an unprimeable number, because it can be changed into a prime (1123657141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16761 + ... + 50281.

Almost surely, 2^1123657441 is an apocalyptic number.

1123657441 is the 33521-st square number.

1123657441 is the 16761-st centered octagonal number.

It is an amenable number.

1123657441 is a deficient number, since it is larger than the sum of its proper divisors (33522).

1123657441 is an frugal number, since it uses more digits than its factorization.

1123657441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67042 (or 33521 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The cubic root of 1123657441 is about 1039.6280230976.

The spelling of 1123657441 in words is "one billion, one hundred twenty-three million, six hundred fifty-seven thousand, four hundred forty-one".