420477 has 4 divisors (see below), whose sum is σ = 560640. Its totient is φ = 280316.

The previous prime is 420467. The next prime is 420479. The reversal of 420477 is 774024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420477 - 2⁷ = 420349 is a prime.

It is a D-number.

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 420477.

It is not an unprimeable number, because it can be changed into a prime (420479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70077 + ... + 70082.

It is an arithmetic number, because the mean of its divisors is an integer number (140160).

2⁴²⁰⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

420477 is a deficient number, since it is larger than the sum of its proper divisors (140163).

420477 is a wasteful number, since it uses less digits than its factorization.

420477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140162.

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

The square root of 420477 is about 648.4419789002. The cubic root of 420477 is about 74.9170638774.

The spelling of 420477 in words is "four hundred twenty thousand, four hundred seventy-seven", and thus it is an iban number.