1420443401 has 16 divisors (see below), whose sum is σ = 1649504640. Its totient is φ = 1211863680.

The previous prime is 1420443341. The next prime is 1420443413. The reversal of 1420443401 is 1043440241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1420443401 - 2⁶ = 1420443337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420445401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60005 + ... + 80258.

It is an arithmetic number, because the mean of its divisors is an integer number (103094040).

Almost surely, 2^1420443401 is an apocalyptic number.

It is an amenable number.

1420443401 is a deficient number, since it is larger than the sum of its proper divisors (229061239).

1420443401 is a wasteful number, since it uses less digits than its factorization.

1420443401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140336.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1420443401 is about 37688.7702240336. The cubic root of 1420443401 is about 1124.1078427383.

Adding to 1420443401 its reverse (1043440241), we get a palindrome (2463883642).

The spelling of 1420443401 in words is "one billion, four hundred twenty million, four hundred forty-three thousand, four hundred one".