1424510021 has 4 divisors (see below), whose sum is σ = 1554010944. Its totient is φ = 1295009100.

The previous prime is 1424510011. The next prime is 1424510023. The reversal of 1424510021 is 1200154241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1424510021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1424509975 and 1424510002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424510023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64750445 + ... + 64750466.

It is an arithmetic number, because the mean of its divisors is an integer number (388502736).

Almost surely, 2^1424510021 is an apocalyptic number.

1424510021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1424510021 is a deficient number, since it is larger than the sum of its proper divisors (129500923).

1424510021 is a wasteful number, since it uses less digits than its factorization.

1424510021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129500922.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1424510021 is about 37742.6816879776. The cubic root of 1424510021 is about 1125.1795653456.

Adding to 1424510021 its reverse (1200154241), we get a palindrome (2624664262).

The spelling of 1424510021 in words is "one billion, four hundred twenty-four million, five hundred ten thousand, twenty-one".