72080429 has 2 divisors, whose sum is σ = 72080430. Its totient is φ = 72080428.

The previous prime is 72080401. The next prime is 72080431. The reversal of 72080429 is 92408027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71859529 + 220900 = 8477^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 72080429 - 2²⁰ = 71031853 is a prime.

Together with 72080431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72080395 and 72080404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72080479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36040214 + 36040215.

It is an arithmetic number, because the mean of its divisors is an integer number (36040215).

Almost surely, 2^72080429 is an apocalyptic number.

It is an amenable number.

72080429 is a deficient number, since it is larger than the sum of its proper divisors (1).

72080429 is an equidigital number, since it uses as much as digits as its factorization.

72080429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 72080429 is about 8490.0193757141. The cubic root of 72080429 is about 416.1716135044.

The spelling of 72080429 in words is "seventy-two million, eighty thousand, four hundred twenty-nine".