1103402442400 has 144 divisors (see below), whose sum is σ = 2720958831864. Its totient is φ = 436913684480.

The previous prime is 1103402442353. The next prime is 1103402442403. The reversal of 1103402442400 is 42442043011.

It can be written as a sum of positive squares in 12 ways, for example, as 374284556944 + 729117885456 = 611788^2 + 853884^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1103402442403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32230092 + ... + 32264308.

Almost surely, 2^{1103402442400} is an apocalyptic number.

1103402442400 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 1103402442400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360479415932).

1103402442400 is an abundant number, since it is smaller than the sum of its proper divisors (1617556389464).

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

1103402442400 is a wasteful number, since it uses less digits than its factorization.

1103402442400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34643 (or 34630 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1103402442400 its reverse (42442043011), we get a palindrome (1145844485411).

The spelling of 1103402442400 in words is "one trillion, one hundred three billion, four hundred two million, four hundred forty-two thousand, four hundred".