123120124397 has 2 divisors, whose sum is σ = 123120124398. Its totient is φ = 123120124396.

The previous prime is 123120124349. The next prime is 123120124423. The reversal of 123120124397 is 793421021321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119429683396 + 3690441001 = 345586^2 + 60749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123120124397 is a prime.

It is a super-2 number, since 2×123120124397² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123120124597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560062198 + 61560062199.

It is an arithmetic number, because the mean of its divisors is an integer number (61560062199).

Almost surely, 2^123120124397 is an apocalyptic number.

It is an amenable number.

123120124397 is a deficient number, since it is larger than the sum of its proper divisors (1).

123120124397 is an equidigital number, since it uses as much as digits as its factorization.

123120124397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 123120124397 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred twenty-four thousand, three hundred ninety-seven".