200420123 has 4 divisors (see below), whose sum is σ = 212209560. Its totient is φ = 188630688.

The previous prime is 200420107. The next prime is 200420147. The reversal of 200420123 is 321024002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200420123 - 2⁴ = 200420107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200420098 and 200420107.

It is not an unprimeable number, because it can be changed into a prime (200420023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5894693 + ... + 5894726.

It is an arithmetic number, because the mean of its divisors is an integer number (53052390).

Almost surely, 2^200420123 is an apocalyptic number.

200420123 is a deficient number, since it is larger than the sum of its proper divisors (11789437).

200420123 is a wasteful number, since it uses less digits than its factorization.

200420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11789436.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 200420123 is about 14156.9814226056. The cubic root of 200420123 is about 585.2127436232.

Adding to 200420123 its reverse (321024002), we get a palindrome (521444125).

The spelling of 200420123 in words is "two hundred million, four hundred twenty thousand, one hundred twenty-three".