1103402401920 has 768 divisors, whose sum is σ = 4708281876480. Its totient is φ = 231871610880.

The previous prime is 1103402401889. The next prime is 1103402402009. The reversal of 1103402401920 is 291042043011.

It is a happy number.

1103402401920 is a `hidden beast` number, since 110 + 340 + 24 + 0 + 192 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 134705025 + ... + 134713215.

It is an arithmetic number, because the mean of its divisors is an integer number (6130575360).

Almost surely, 2^{1103402401920} is an apocalyptic number.

1103402401920 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 1103402401920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354140938240).

1103402401920 is an abundant number, since it is smaller than the sum of its proper divisors (3604879474560).

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

1103402401920 is a wasteful number, since it uses less digits than its factorization.

1103402401920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8493 (or 8478 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 1103402401920 its reverse (291042043011), we get a palindrome (1394444444931).

The spelling of 1103402401920 in words is "one trillion, one hundred three billion, four hundred two million, four hundred one thousand, nine hundred twenty".