124320397 has 2 divisors, whose sum is σ = 124320398. Its totient is φ = 124320396.

The previous prime is 124320377. The next prime is 124320433. The reversal of 124320397 is 793023421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112063396 + 12257001 = 10586^2 + 3501^2 .

It is an emirp because it is prime and its reverse (793023421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124320397 is a prime.

It is a super-2 number, since 2×124320397² = 30911122220475218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124320307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62160198 + 62160199.

It is an arithmetic number, because the mean of its divisors is an integer number (62160199).

Almost surely, 2^124320397 is an apocalyptic number.

It is an amenable number.

124320397 is a deficient number, since it is larger than the sum of its proper divisors (1).

124320397 is an equidigital number, since it uses as much as digits as its factorization.

124320397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 124320397 is about 11149.9056946685. The cubic root of 124320397 is about 499.0922155188.

The spelling of 124320397 in words is "one hundred twenty-four million, three hundred twenty thousand, three hundred ninety-seven".