1123421213040 has 160 divisors (see below), whose sum is σ = 3984938519040. Its totient is φ = 256471176192.

The previous prime is 1123421213027. The next prime is 1123421213053. The reversal of 1123421213040 is 403121243211.

It is an interprime number because it is at equal distance from previous prime (1123421213027) and next prime (1123421213053).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1123421213040.

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 31 ways as a sum of consecutive naturals, for example, 985066 + ... + 1793654.

It is an arithmetic number, because the mean of its divisors is an integer number (24905865744).

Almost surely, 2^{1123421213040} is an apocalyptic number.

1123421213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123421213040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992469259520).

1123421213040 is an abundant number, since it is smaller than the sum of its proper divisors (2861517306000).

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

1123421213040 is a wasteful number, since it uses less digits than its factorization.

1123421213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809439 (or 809433 counting only the distinct ones).

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

Adding to 1123421213040 its reverse (403121243211), we get a palindrome (1526542456251).

The spelling of 1123421213040 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-one million, two hundred thirteen thousand, forty".