1420424321 has 8 divisors (see below), whose sum is σ = 1491337920. Its totient is φ = 1350973008.

The previous prime is 1420424297. The next prime is 1420424323. The reversal of 1420424321 is 1234240241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420424321 is a prime.

It is a super-2 number, since 2×1420424321² = 4035210503376622082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420424323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363581 + ... + 367466.

It is an arithmetic number, because the mean of its divisors is an integer number (186417240).

Almost surely, 2^1420424321 is an apocalyptic number.

It is an amenable number.

1420424321 is a deficient number, since it is larger than the sum of its proper divisors (70913599).

1420424321 is an equidigital number, since it uses as much as digits as its factorization.

1420424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731143.

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

The square root of 1420424321 is about 37688.5170973866. The cubic root of 1420424321 is about 1124.1028095509.

Adding to 1420424321 its reverse (1234240241), we get a palindrome (2654664562).

The spelling of 1420424321 in words is "one billion, four hundred twenty million, four hundred twenty-four thousand, three hundred twenty-one".