420774 has 16 divisors (see below), whose sum is σ = 886080. Its totient is φ = 132840.

The previous prime is 420769. The next prime is 420779. The reversal of 420774 is 477024.

It is an interprime number because it is at equal distance from previous prime (420769) and next prime (420779).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (55380).

2⁴²⁰⁷⁷⁴ is an apocalyptic number.

420774 is an abundant number, since it is smaller than the sum of its proper divisors (465306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420774 is a wasteful number, since it uses less digits than its factorization.

420774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 420774 is about 648.6709489410. The cubic root of 420774 is about 74.9346987153.

Adding to 420774 its reverse (477024), we get a palindrome (897798).

The spelling of 420774 in words is "four hundred twenty thousand, seven hundred seventy-four", and thus it is an iban number.