123019897 has 32 divisors (see below), whose sum is σ = 168053760. Its totient is φ = 86944320.

The previous prime is 123019891. The next prime is 123019903. The reversal of 123019897 is 798910321.

It is an interprime number because it is at equal distance from previous prime (123019891) and next prime (123019903).

It is a cyclic number.

It is not a de Polignac number, because 123019897 - 2¹¹ = 123017849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (123019891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58018 + ... + 60100.

It is an arithmetic number, because the mean of its divisors is an integer number (5251680).

Almost surely, 2^123019897 is an apocalyptic number.

It is an amenable number.

123019897 is a deficient number, since it is larger than the sum of its proper divisors (45033863).

123019897 is a wasteful number, since it uses less digits than its factorization.

123019897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 123019897 is about 11091.4334961717. The cubic root of 123019897 is about 497.3457980214.

The spelling of 123019897 in words is "one hundred twenty-three million, nineteen thousand, eight hundred ninety-seven".