1424431421 has 6 divisors (see below), whose sum is σ = 1656991710. Its totient is φ = 1220941176.

The previous prime is 1424431417. The next prime is 1424431427. The reversal of 1424431421 is 1241344241.

It can be written as a sum of positive squares in only one way, i.e., 744525796 + 679905625 = 27286^2 + 26075^2 .

It is not a de Polignac number, because 1424431421 - 2² = 1424431417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424431427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14534966 + ... + 14535063.

It is an arithmetic number, because the mean of its divisors is an integer number (276165285).

Almost surely, 2^1424431421 is an apocalyptic number.

It is an amenable number.

1424431421 is a deficient number, since it is larger than the sum of its proper divisors (232560289).

1424431421 is an equidigital number, since it uses as much as digits as its factorization.

1424431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29070043 (or 29070036 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 1424431421 is about 37741.6404121495. The cubic root of 1424431421 is about 1125.1588703372.

Adding to 1424431421 its reverse (1241344241), we get a palindrome (2665775662).

The spelling of 1424431421 in words is "one billion, four hundred twenty-four million, four hundred thirty-one thousand, four hundred twenty-one".