1040720743 has 4 divisors (see below), whose sum is σ = 1041242328. Its totient is φ = 1040199160.

The previous prime is 1040720711. The next prime is 1040720761. The reversal of 1040720743 is 3470270401.

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 1040720743 - 2⁵ = 1040720711 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 (1040750743) 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, 257788 + ... + 261793.

It is an arithmetic number, because the mean of its divisors is an integer number (260310582).

Almost surely, 2^1040720743 is an apocalyptic number.

1040720743 is a deficient number, since it is larger than the sum of its proper divisors (521585).

1040720743 is an equidigital number, since it uses as much as digits as its factorization.

1040720743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521584.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 1040720743 is about 32260.2037036346. The cubic root of 1040720743 is about 1013.3933970654.

The spelling of 1040720743 in words is "one billion, forty million, seven hundred twenty thousand, seven hundred forty-three".