72061123 has 2 divisors, whose sum is σ = 72061124. Its totient is φ = 72061122.

The previous prime is 72061109. The next prime is 72061127. The reversal of 72061123 is 32116027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72061123 - 2¹³ = 72052931 is a prime.

It is a super-2 number, since 2×72061123² = 10385610896042258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72061094 and 72061103.

It is not a weakly prime, because it can be changed into another prime (72061127) 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 as a sum of consecutive naturals, namely, 36030561 + 36030562.

It is an arithmetic number, because the mean of its divisors is an integer number (36030562).

Almost surely, 2^72061123 is an apocalyptic number.

72061123 is a deficient number, since it is larger than the sum of its proper divisors (1).

72061123 is an equidigital number, since it uses as much as digits as its factorization.

72061123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72061123 is about 8488.8823174786. The cubic root of 72061123 is about 416.1344544275.

The spelling of 72061123 in words is "seventy-two million, sixty-one thousand, one hundred twenty-three".