123420420199 has 8 divisors (see below), whose sum is σ = 123957915840. Its totient is φ = 122883507936.

The previous prime is 123420420181. The next prime is 123420420209. The reversal of 123420420199 is 991024024321.

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

It is a cyclic number.

It is not a de Polignac number, because 123420420199 - 2⁹ = 123420419687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420420899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280909 + ... + 570745.

It is an arithmetic number, because the mean of its divisors is an integer number (15494739480).

Almost surely, 2^123420420199 is an apocalyptic number.

123420420199 is a deficient number, since it is larger than the sum of its proper divisors (537495641).

123420420199 is a wasteful number, since it uses less digits than its factorization.

123420420199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291689.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 123420420199 in words is "one hundred twenty-three billion, four hundred twenty million, four hundred twenty thousand, one hundred ninety-nine".