420049 has 8 divisors (see below), whose sum is σ = 501120. Its totient is φ = 344256.

The previous prime is 420047. The next prime is 420073. The reversal of 420049 is 940024.

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 420049 - 2¹ = 420047 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144 + ... + 1465.

It is an arithmetic number, because the mean of its divisors is an integer number (62640).

2⁴²⁰⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

420049 is a deficient number, since it is larger than the sum of its proper divisors (81071).

420049 is a wasteful number, since it uses less digits than its factorization.

420049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 420049 is about 648.1118730590. Note that the first 3 decimals coincide. The cubic root of 420049 is about 74.8916360982.

The spelling of 420049 in words is "four hundred twenty thousand, forty-nine".