123272029 has 2 divisors, whose sum is σ = 123272030. Its totient is φ = 123272028.

The previous prime is 123271999. The next prime is 123272047. The reversal of 123272029 is 920272321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119311929 + 3960100 = 10923^2 + 1990^2 .

It is an emirp because it is prime and its reverse (920272321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123272029 - 2¹⁹ = 122747741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123271988 and 123272006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123270029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61636014 + 61636015.

It is an arithmetic number, because the mean of its divisors is an integer number (61636015).

Almost surely, 2^123272029 is an apocalyptic number.

It is an amenable number.

123272029 is a deficient number, since it is larger than the sum of its proper divisors (1).

123272029 is an equidigital number, since it uses as much as digits as its factorization.

123272029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 123272029 is about 11102.7937475214. The cubic root of 123272029 is about 497.6853398988.

The spelling of 123272029 in words is "one hundred twenty-three million, two hundred seventy-two thousand, twenty-nine".