1424074721 has 4 divisors (see below), whose sum is σ = 1424183472. Its totient is φ = 1423965972.

The previous prime is 1424074711. The next prime is 1424074723. The reversal of 1424074721 is 1274704241.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1424074721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1424074723) 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, 31535 + ... + 61988.

It is an arithmetic number, because the mean of its divisors is an integer number (356045868).

Almost surely, 2^1424074721 is an apocalyptic number.

It is an amenable number.

1424074721 is a deficient number, since it is larger than the sum of its proper divisors (108751).

1424074721 is an equidigital number, since it uses as much as digits as its factorization.

1424074721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108750.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 1424074721 is about 37736.9145665090. The cubic root of 1424074721 is about 1125.0649433456.

Adding to 1424074721 its reverse (1274704241), we get a palindrome (2698778962).

The spelling of 1424074721 in words is "one billion, four hundred twenty-four million, seventy-four thousand, seven hundred twenty-one".