1123120464 has 80 divisors (see below), whose sum is σ = 2962667520. Its totient is φ = 366537600.

The previous prime is 1123120451. The next prime is 1123120477. The reversal of 1123120464 is 4640213211.

It is an interprime number because it is at equal distance from previous prime (1123120451) and next prime (1123120477).

It is a super-2 number, since 2×1123120464² = 2522799153311150592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574689 + ... + 576639.

It is an arithmetic number, because the mean of its divisors is an integer number (37033344).

Almost surely, 2^1123120464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123120464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481333760).

1123120464 is an abundant number, since it is smaller than the sum of its proper divisors (1839547056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123120464 is a wasteful number, since it uses less digits than its factorization.

1123120464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1123120464 is about 33512.9894816920. The cubic root of 1123120464 is about 1039.4623897923.

Adding to 1123120464 its reverse (4640213211), we get a palindrome (5763333675).

The spelling of 1123120464 in words is "one billion, one hundred twenty-three million, one hundred twenty thousand, four hundred sixty-four".