123401153 has 2 divisors, whose sum is σ = 123401154. Its totient is φ = 123401152.

The previous prime is 123401149. The next prime is 123401167. The reversal of 123401153 is 351104321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 4765489 = 10892^2 + 2183^2 .

It is a cyclic number.

It is not a de Polignac number, because 123401153 - 2² = 123401149 is a prime.

It is not a weakly prime, because it can be changed into another prime (123401183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61700576 + 61700577.

It is an arithmetic number, because the mean of its divisors is an integer number (61700577).

Almost surely, 2^123401153 is an apocalyptic number.

It is an amenable number.

123401153 is a deficient number, since it is larger than the sum of its proper divisors (1).

123401153 is an equidigital number, since it uses as much as digits as its factorization.

123401153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 123401153 is about 11108.6071584155. The cubic root of 123401153 is about 497.8590497486.

Adding to 123401153 its reverse (351104321), we get a palindrome (474505474).

The spelling of 123401153 in words is "one hundred twenty-three million, four hundred one thousand, one hundred fifty-three".