123401149 has 2 divisors, whose sum is σ = 123401150. Its totient is φ = 123401148.

The previous prime is 123401101. The next prime is 123401153. The reversal of 123401149 is 941104321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65367225 + 58033924 = 8085^2 + 7618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123401149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123401449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61700574 + 61700575.

It is an arithmetic number, because the mean of its divisors is an integer number (61700575).

Almost surely, 2^123401149 is an apocalyptic number.

It is an amenable number.

123401149 is a deficient number, since it is larger than the sum of its proper divisors (1).

123401149 is an equidigital number, since it uses as much as digits as its factorization.

123401149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 123401149 is about 11108.6069783749. The cubic root of 123401149 is about 497.8590443693.

The spelling of 123401149 in words is "one hundred twenty-three million, four hundred one thousand, one hundred forty-nine".