72143413 has 2 divisors, whose sum is σ = 72143414. Its totient is φ = 72143412.

The previous prime is 72143411. The next prime is 72143431. The reversal of 72143413 is 31434127.

Together with next prime (72143431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72029169 + 114244 = 8487^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 72143413 - 2¹ = 72143411 is a prime.

It is a super-4 number, since 4×72143413⁴ (a number of 33 digits) contains 4444 as substring.

Together with 72143411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72143411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36071706 + 36071707.

It is an arithmetic number, because the mean of its divisors is an integer number (36071707).

Almost surely, 2^72143413 is an apocalyptic number.

It is an amenable number.

72143413 is a deficient number, since it is larger than the sum of its proper divisors (1).

72143413 is an equidigital number, since it uses as much as digits as its factorization.

72143413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 72143413 is about 8493.7278623700. The cubic root of 72143413 is about 416.2927953667.

The spelling of 72143413 in words is "seventy-two million, one hundred forty-three thousand, four hundred thirteen".