123492191405 has 8 divisors (see below), whose sum is σ = 161662505184. Its totient is φ = 89812502800.

The previous prime is 123492191393. The next prime is 123492191411. The reversal of 123492191405 is 504191294321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123492191405 - 2⁸ = 123492191149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122656231 + ... + 1122656340.

It is an arithmetic number, because the mean of its divisors is an integer number (20207813148).

Almost surely, 2^123492191405 is an apocalyptic number.

It is an amenable number.

123492191405 is a deficient number, since it is larger than the sum of its proper divisors (38170313779).

123492191405 is a wasteful number, since it uses less digits than its factorization.

123492191405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245312587.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 123492191405 in words is "one hundred twenty-three billion, four hundred ninety-two million, one hundred ninety-one thousand, four hundred five".