420928186123 has 2 divisors, whose sum is σ = 420928186124. Its totient is φ = 420928186122.

The previous prime is 420928186097. The next prime is 420928186139. The reversal of 420928186123 is 321681829024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420928186123 is a prime.

It is a super-2 number, since 2×420928186123² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420928186823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210464093061 + 210464093062.

It is an arithmetic number, because the mean of its divisors is an integer number (210464093062).

Almost surely, 2^420928186123 is an apocalyptic number.

420928186123 is a deficient number, since it is larger than the sum of its proper divisors (1).

420928186123 is an equidigital number, since it uses as much as digits as its factorization.

420928186123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 420928186123 in words is "four hundred twenty billion, nine hundred twenty-eight million, one hundred eighty-six thousand, one hundred twenty-three".