1000740043 has 4 divisors (see below), whose sum is σ = 1001215768. Its totient is φ = 1000264320.

The previous prime is 1000740031. The next prime is 1000740049. The reversal of 1000740043 is 3400470001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000740043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000740043.

It is not an unprimeable number, because it can be changed into a prime (1000740049) 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, 234693 + ... + 238918.

It is an arithmetic number, because the mean of its divisors is an integer number (250303942).

Almost surely, 2^1000740043 is an apocalyptic number.

1000740043 is a deficient number, since it is larger than the sum of its proper divisors (475725).

1000740043 is an equidigital number, since it uses as much as digits as its factorization.

1000740043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475724.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1000740043 is about 31634.4755448862. The cubic root of 1000740043 is about 1000.2466201735.

The spelling of 1000740043 in words is "one billion, seven hundred forty thousand, forty-three".