72641043 has 10 divisors (see below), whose sum is σ = 108513284. Its totient is φ = 48427308.

The previous prime is 72641011. The next prime is 72641071. The reversal of 72641043 is 34014627.

It is not a de Polignac number, because 72641043 - 2⁵ = 72641011 is a prime.

It is a super-2 number, since 2×72641043² = 10553442256255698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72640998 and 72641016.

It is not an unprimeable number, because it can be changed into a prime (72641003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 448321 + ... + 448482.

Almost surely, 2^72641043 is an apocalyptic number.

72641043 is a deficient number, since it is larger than the sum of its proper divisors (35872241).

72641043 is an equidigital number, since it uses as much as digits as its factorization.

72641043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896815 (or 896806 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 72641043 is about 8522.9714888647. The cubic root of 72641043 is about 417.2477695277.

The spelling of 72641043 in words is "seventy-two million, six hundred forty-one thousand, forty-three".