420703723 has 8 divisors (see below), whose sum is σ = 460315440. Its totient is φ = 381319680.

The previous prime is 420703693. The next prime is 420703729. The reversal of 420703723 is 327307024.

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 420703723 - 2⁵ = 420703691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420703691 and 420703700.

It is not an unprimeable number, because it can be changed into a prime (420703729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53038 + ... + 60451.

It is an arithmetic number, because the mean of its divisors is an integer number (57539430).

Almost surely, 2^420703723 is an apocalyptic number.

420703723 is a deficient number, since it is larger than the sum of its proper divisors (39611717).

420703723 is a wasteful number, since it uses less digits than its factorization.

420703723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113837.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 420703723 is about 20511.0634292813. The cubic root of 420703723 is about 749.3052665853.

The spelling of 420703723 in words is "four hundred twenty million, seven hundred three thousand, seven hundred twenty-three".