1020434201 has 4 divisors (see below), whose sum is σ = 1020513792. Its totient is φ = 1020354612.

The previous prime is 1020434153. The next prime is 1020434203. The reversal of 1020434201 is 1024340201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1024340201 = 3089 ⋅331609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020434201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020434201.

It is not an unprimeable number, because it can be changed into a prime (1020434203) 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, 15701 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (255128448).

Almost surely, 2^1020434201 is an apocalyptic number.

It is an amenable number.

1020434201 is a deficient number, since it is larger than the sum of its proper divisors (79591).

1020434201 is an equidigital number, since it uses as much as digits as its factorization.

1020434201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79590.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020434201 is about 31944.2358024104. The cubic root of 1020434201 is about 1006.7655247831.

Adding to 1020434201 its reverse (1024340201), we get a palindrome (2044774402).

The spelling of 1020434201 in words is "one billion, twenty million, four hundred thirty-four thousand, two hundred one".