1123021040 has 40 divisors (see below), whose sum is σ = 2681599200. Its totient is φ = 437066496.

The previous prime is 1123021033. The next prime is 1123021061. The reversal of 1123021040 is 401203211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1123021040² = 2522352512565363200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186740 + ... + 192659.

It is an arithmetic number, because the mean of its divisors is an integer number (67039980).

Almost surely, 2^1123021040 is an apocalyptic number.

1123021040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123021040 is an abundant number, since it is smaller than the sum of its proper divisors (1558578160).

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

1123021040 is a wasteful number, since it uses less digits than its factorization.

1123021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379449 (or 379443 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1123021040 is about 33511.5060837319. The cubic root of 1123021040 is about 1039.4317161583.

Adding to 1123021040 its reverse (401203211), we get a palindrome (1524224251).

The spelling of 1123021040 in words is "one billion, one hundred twenty-three million, twenty-one thousand, forty".