1111401047 has 4 divisors (see below), whose sum is σ = 1111473000. Its totient is φ = 1111329096.

The previous prime is 1111401041. The next prime is 1111401059. The reversal of 1111401047 is 7401041111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7401041111 = 25541 ⋅289771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111401047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111401041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2297 + ... + 47202.

It is an arithmetic number, because the mean of its divisors is an integer number (277868250).

Almost surely, 2^1111401047 is an apocalyptic number.

1111401047 is a deficient number, since it is larger than the sum of its proper divisors (71953).

1111401047 is an equidigital number, since it uses as much as digits as its factorization.

1111401047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71952.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1111401047 is about 33337.6820879917. The cubic root of 1111401047 is about 1035.8342506382.

Adding to 1111401047 its reverse (7401041111), we get a palindrome (8512442158).

The spelling of 1111401047 in words is "one billion, one hundred eleven million, four hundred one thousand, forty-seven".