1047400043 has 4 divisors (see below), whose sum is σ = 1048252128. Its totient is φ = 1046547960.

The previous prime is 1047399979. The next prime is 1047400087. The reversal of 1047400043 is 3400047401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1047400043 - 2⁶ = 1047399979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1047399991 and 1047400018.

It is not an unprimeable number, because it can be changed into a prime (1047400943) 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, 424196 + ... + 426657.

It is an arithmetic number, because the mean of its divisors is an integer number (262063032).

Almost surely, 2^1047400043 is an apocalyptic number.

1047400043 is a deficient number, since it is larger than the sum of its proper divisors (852085).

1047400043 is an equidigital number, since it uses as much as digits as its factorization.

1047400043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852084.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 1047400043 is about 32363.5604190886. The cubic root of 1047400043 is about 1015.5567469816.

Adding to 1047400043 its reverse (3400047401), we get a palindrome (4447447444).

The spelling of 1047400043 in words is "one billion, forty-seven million, four hundred thousand, forty-three".