123734869 has 2 divisors, whose sum is σ = 123734870. Its totient is φ = 123734868.

The previous prime is 123734837. The next prime is 123734873. The reversal of 123734869 is 968437321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78978769 + 44756100 = 8887^2 + 6690^2 .

It is a cyclic number.

It is not a de Polignac number, because 123734869 - 2⁵ = 123734837 is a prime.

It is a super-2 number, since 2×123734869² = 30620635612894322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123734069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61867434 + 61867435.

It is an arithmetic number, because the mean of its divisors is an integer number (61867435).

Almost surely, 2^123734869 is an apocalyptic number.

It is an amenable number.

123734869 is a deficient number, since it is larger than the sum of its proper divisors (1).

123734869 is an equidigital number, since it uses as much as digits as its factorization.

123734869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 123734869 is about 11123.6176219789. The cubic root of 123734869 is about 498.3074355831.

The spelling of 123734869 in words is "one hundred twenty-three million, seven hundred thirty-four thousand, eight hundred sixty-nine".