1420204431 has 4 divisors (see below), whose sum is σ = 1893605912. Its totient is φ = 946802952.

The previous prime is 1420204403. The next prime is 1420204439. The reversal of 1420204431 is 1344020241.

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

It is not a de Polignac number, because 1420204431 - 2¹¹ = 1420202383 is a prime.

It is a super-2 number, since 2×1420204431² = 4033961251664067522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420204398 and 1420204407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420204439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236700736 + ... + 236700741.

It is an arithmetic number, because the mean of its divisors is an integer number (473401478).

Almost surely, 2^1420204431 is an apocalyptic number.

1420204431 is a deficient number, since it is larger than the sum of its proper divisors (473401481).

1420204431 is an equidigital number, since it uses as much as digits as its factorization.

1420204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473401480.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1420204431 is about 37685.5997829410. The cubic root of 1420204431 is about 1124.0448006590.

Adding to 1420204431 its reverse (1344020241), we get a palindrome (2764224672).

The spelling of 1420204431 in words is "one billion, four hundred twenty million, two hundred four thousand, four hundred thirty-one".