123912069 has 16 divisors (see below), whose sum is σ = 169205760. Its totient is φ = 80623280.

The previous prime is 123912067. The next prime is 123912073. The reversal of 123912069 is 960219321.

It is a cyclic number.

It is not a de Polignac number, because 123912069 - 2¹ = 123912067 is a prime.

It is a super-2 number, since 2×123912069² = 30708401687721522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123912067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59752 + ... + 61790.

It is an arithmetic number, because the mean of its divisors is an integer number (10575360).

Almost surely, 2^123912069 is an apocalyptic number.

It is an amenable number.

123912069 is a deficient number, since it is larger than the sum of its proper divisors (45293691).

123912069 is a wasteful number, since it uses less digits than its factorization.

123912069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 123912069 is about 11131.5798070175. The cubic root of 123912069 is about 498.5451965324.

It can be divided in two parts, 1 and 23912069, that added together give a triangular number (23912070 = T₆₉₁₅).

The spelling of 123912069 in words is "one hundred twenty-three million, nine hundred twelve thousand, sixty-nine".