1206103440 has 160 divisors (see below), whose sum is σ = 3930034176. Its totient is φ = 305395200.

The previous prime is 1206103433. The next prime is 1206103469. The reversal of 1206103440 is 443016021.

1206103440 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 34729²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 832797 + ... + 834243.

Almost surely, 2^1206103440 is an apocalyptic number.

1206103440 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 1206103440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965017088).

1206103440 is an abundant number, since it is smaller than the sum of its proper divisors (2723930736).

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

1206103440 is a wasteful number, since it uses less digits than its factorization.

1206103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1206103440 is about 34728.9999856028. Note that the first 4 decimals coincide. The cubic root of 1206103440 is about 1064.4571546368.

Adding to 1206103440 its reverse (443016021), we get a palindrome (1649119461).

The spelling of 1206103440 in words is "one billion, two hundred six million, one hundred three thousand, four hundred forty".