1420243234 has 4 divisors (see below), whose sum is σ = 2130364854. Its totient is φ = 710121616.

The previous prime is 1420243229. The next prime is 1420243267. The reversal of 1420243234 is 4323420241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1342856025 + 77387209 = 36645^2 + 8797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1420243199 and 1420243208.

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, 355060807 + ... + 355060810.

Almost surely, 2^1420243234 is an apocalyptic number.

1420243234 is a deficient number, since it is larger than the sum of its proper divisors (710121620).

1420243234 is an equidigital number, since it uses as much as digits as its factorization.

1420243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710121619.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1420243234 is about 37686.1146047188. The cubic root of 1420243234 is about 1124.0550376625.

Adding to 1420243234 its reverse (4323420241), we get a palindrome (5743663475).

The spelling of 1420243234 in words is "one billion, four hundred twenty million, two hundred forty-three thousand, two hundred thirty-four".