1420238 has 4 divisors (see below), whose sum is σ = 2130360. Its totient is φ = 710118.

The previous prime is 1420207. The next prime is 1420253. The reversal of 1420238 is 8320241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8320241 = 1907 ⋅4363.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 355058 + ... + 355061.

It is an arithmetic number, because the mean of its divisors is an integer number (532590).

2^1420238 is an apocalyptic number.

1420238 is a deficient number, since it is larger than the sum of its proper divisors (710122).

1420238 is an equidigital number, since it uses as much as digits as its factorization.

1420238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710121.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1420238 is about 1191.7373871789. The cubic root of 1420238 is about 112.4053656840.

Adding to 1420238 its reverse (8320241), we get a palindrome (9740479).

The spelling of 1420238 in words is "one million, four hundred twenty thousand, two hundred thirty-eight".