420734 has 8 divisors (see below), whose sum is σ = 634728. Its totient is φ = 209160.

The previous prime is 420731. The next prime is 420737. The reversal of 420734 is 437024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (420731) and next prime (420737).

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420734.

It is not an unprimeable number, because it can be changed into a prime (420731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (79341).

2⁴²⁰⁷³⁴ is an apocalyptic number.

420734 is a deficient number, since it is larger than the sum of its proper divisors (213994).

420734 is a wasteful number, since it uses less digits than its factorization.

420734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 420734 is about 648.6401159349. The cubic root of 420734 is about 74.9323241366.

Adding to 420734 its reverse (437024), we get a palindrome (857758).

Subtracting 420734 from its reverse (437024), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 420734 in words is "four hundred twenty thousand, seven hundred thirty-four".