420189743 has 2 divisors, whose sum is σ = 420189744. Its totient is φ = 420189742.

The previous prime is 420189739. The next prime is 420189761. The reversal of 420189743 is 347981024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420189743 - 2² = 420189739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420189697 and 420189706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420189793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210094871 + 210094872.

It is an arithmetic number, because the mean of its divisors is an integer number (210094872).

Almost surely, 2^420189743 is an apocalyptic number.

420189743 is a deficient number, since it is larger than the sum of its proper divisors (1).

420189743 is an equidigital number, since it uses as much as digits as its factorization.

420189743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 420189743 is about 20498.5302643872. The cubic root of 420189743 is about 748.9999964349. Note that the first 5 decimals are identical.

The spelling of 420189743 in words is "four hundred twenty million, one hundred eighty-nine thousand, seven hundred forty-three".