72143803 has 2 divisors, whose sum is σ = 72143804. Its totient is φ = 72143802.

The previous prime is 72143761. The next prime is 72143807. The reversal of 72143803 is 30834127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72143803 - 2²¹ = 70046651 is a prime.

It is a super-2 number, since 2×72143803² = 10409456622605618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72143807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36071901 + 36071902.

It is an arithmetic number, because the mean of its divisors is an integer number (36071902).

Almost surely, 2^72143803 is an apocalyptic number.

72143803 is a deficient number, since it is larger than the sum of its proper divisors (1).

72143803 is an equidigital number, since it uses as much as digits as its factorization.

72143803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 72143803 is about 8493.7508204562. The cubic root of 72143803 is about 416.2935455110.

The spelling of 72143803 in words is "seventy-two million, one hundred forty-three thousand, eight hundred three".