1101047405 has 4 divisors (see below), whose sum is σ = 1321256892. Its totient is φ = 880837920.

The previous prime is 1101047399. The next prime is 1101047417. The reversal of 1101047405 is 5047401011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5047401011 = 3331 ⋅1515281.

It can be written as a sum of positive squares in 2 ways, for example, as 388050601 + 712996804 = 19699^2 + 26702^2 .

It is not a de Polignac number, because 1101047405 - 2⁶ = 1101047341 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 110104736 + ... + 110104745.

It is an arithmetic number, because the mean of its divisors is an integer number (330314223).

Almost surely, 2^1101047405 is an apocalyptic number.

It is an amenable number.

1101047405 is a deficient number, since it is larger than the sum of its proper divisors (220209487).

1101047405 is an equidigital number, since it uses as much as digits as its factorization.

1101047405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220209486.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1101047405 is about 33182.0343710267. The cubic root of 1101047405 is about 1032.6076525360.

Adding to 1101047405 its reverse (5047401011), we get a palindrome (6148448416).

The spelling of 1101047405 in words is "one billion, one hundred one million, forty-seven thousand, four hundred five".