123137401 has 2 divisors, whose sum is σ = 123137402. Its totient is φ = 123137400.

The previous prime is 123137323. The next prime is 123137429. The reversal of 123137401 is 104731321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116640000 + 6497401 = 10800^2 + 2549^2 .

It is an emirp because it is prime and its reverse (104731321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123137401 - 2⁹ = 123136889 is a prime.

It is not a weakly prime, because it can be changed into another prime (123137431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61568700 + 61568701.

It is an arithmetic number, because the mean of its divisors is an integer number (61568701).

Almost surely, 2^123137401 is an apocalyptic number.

It is an amenable number.

123137401 is a deficient number, since it is larger than the sum of its proper divisors (1).

123137401 is an equidigital number, since it uses as much as digits as its factorization.

123137401 is an evil number, because the sum of its binary digits is even.

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

The square root of 123137401 is about 11096.7292929043. The cubic root of 123137401 is about 497.5040963275.

Adding to 123137401 its reverse (104731321), we get a palindrome (227868722).

The spelling of 123137401 in words is "one hundred twenty-three million, one hundred thirty-seven thousand, four hundred one".