420026 has 12 divisors (see below), whose sum is σ = 660282. Its totient is φ = 200376.

The previous prime is 420001. The next prime is 420029. The reversal of 420026 is 620024.

It can be written as a sum of positive squares in only one way, i.e., 330625 + 89401 = 575^2 + 299^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420026.

It is not an unprimeable number, because it can be changed into a prime (420029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860 + ... + 1256.

2⁴²⁰⁰²⁶ is an apocalyptic number.

420026 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

420026 is a deficient number, since it is larger than the sum of its proper divisors (240256).

420026 is a wasteful number, since it uses less digits than its factorization.

420026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 420026 is about 648.0941289658. The cubic root of 420026 is about 74.8902691632.

The spelling of 420026 in words is "four hundred twenty thousand, twenty-six".