1575468421 has 8 divisors (see below), whose sum is σ = 1740671424. Its totient is φ = 1418324160.

The previous prime is 1575468403. The next prime is 1575468437. The reversal of 1575468421 is 1248645751.

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-1575468421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575465421) 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, 2014275 + ... + 2015056.

It is an arithmetic number, because the mean of its divisors is an integer number (217583928).

Almost surely, 2^1575468421 is an apocalyptic number.

It is an amenable number.

1575468421 is a deficient number, since it is larger than the sum of its proper divisors (165203003).

1575468421 is a wasteful number, since it uses less digits than its factorization.

1575468421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029371.

The product of its digits is 268800, while the sum is 43.

The square root of 1575468421 is about 39692.1707771193. The cubic root of 1575468421 is about 1163.5987182185.

The spelling of 1575468421 in words is "one billion, five hundred seventy-five million, four hundred sixty-eight thousand, four hundred twenty-one".