1420434431 has 4 divisors (see below), whose sum is σ = 1529698632. Its totient is φ = 1311170232.

The previous prime is 1420434427. The next prime is 1420434461. The reversal of 1420434431 is 1344340241.

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

It is a cyclic number.

It is not a de Polignac number, because 1420434431 - 2² = 1420434427 is a prime.

It is a super-2 number, since 2×1420434431² = 4035267945540587522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420434401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54632081 + ... + 54632106.

It is an arithmetic number, because the mean of its divisors is an integer number (382424658).

Almost surely, 2^1420434431 is an apocalyptic number.

1420434431 is a deficient number, since it is larger than the sum of its proper divisors (109264201).

1420434431 is a wasteful number, since it uses less digits than its factorization.

1420434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109264200.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1420434431 is about 37688.6512228814. The cubic root of 1420434431 is about 1124.1054765128.

Adding to 1420434431 its reverse (1344340241), we get a palindrome (2764774672).

The spelling of 1420434431 in words is "one billion, four hundred twenty million, four hundred thirty-four thousand, four hundred thirty-one".