1421530529 has 4 divisors (see below), whose sum is σ = 1421826180. Its totient is φ = 1421234880.

The previous prime is 1421530427. The next prime is 1421530549. The reversal of 1421530529 is 9250351241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 400600225 + 1020930304 = 20015^2 + 31952^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421530529 - 2¹² = 1421526433 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 = 1421530495 and 1421530504.

It is not an unprimeable number, because it can be changed into a prime (1421530549) 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, 140492 + ... + 150269.

It is an arithmetic number, because the mean of its divisors is an integer number (355456545).

Almost surely, 2^1421530529 is an apocalyptic number.

It is an amenable number.

1421530529 is a deficient number, since it is larger than the sum of its proper divisors (295651).

1421530529 is an equidigital number, since it uses as much as digits as its factorization.

1421530529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295650.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1421530529 is about 37703.1899048343. The cubic root of 1421530529 is about 1124.3945460499.

It can be divided in two parts, 14215 and 30529, that added together give a palindrome (44744).

The spelling of 1421530529 in words is "one billion, four hundred twenty-one million, five hundred thirty thousand, five hundred twenty-nine".