1021434305 has 8 divisors (see below), whose sum is σ = 1237177152. Its totient is φ = 809510128.

The previous prime is 1021434289. The next prime is 1021434361. The reversal of 1021434305 is 5034341201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021434305 - 2⁴ = 1021434289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954077 + ... + 955146.

It is an arithmetic number, because the mean of its divisors is an integer number (154647144).

Almost surely, 2^1021434305 is an apocalyptic number.

It is an amenable number.

1021434305 is a deficient number, since it is larger than the sum of its proper divisors (215742847).

1021434305 is a wasteful number, since it uses less digits than its factorization.

1021434305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909335.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1021434305 is about 31959.8858727624. The cubic root of 1021434305 is about 1007.0943199404.

Adding to 1021434305 its reverse (5034341201), we get a palindrome (6055775506).

The spelling of 1021434305 in words is "one billion, twenty-one million, four hundred thirty-four thousand, three hundred five".