72422719 has 2 divisors, whose sum is σ = 72422720. Its totient is φ = 72422718.

The previous prime is 72422689. The next prime is 72422741. The reversal of 72422719 is 91722427.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72422719 - 2⁷ = 72422591 is a prime.

It is a super-2 number, since 2×72422719² = 10490100454705922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72422759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211359 + 36211360.

It is an arithmetic number, because the mean of its divisors is an integer number (36211360).

Almost surely, 2^72422719 is an apocalyptic number.

72422719 is a deficient number, since it is larger than the sum of its proper divisors (1).

72422719 is an equidigital number, since it uses as much as digits as its factorization.

72422719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 72422719 is about 8510.1538763997. The cubic root of 72422719 is about 416.8293347433.

The spelling of 72422719 in words is "seventy-two million, four hundred twenty-two thousand, seven hundred nineteen".