1020430456 has 16 divisors (see below), whose sum is σ = 1915174800. Its totient is φ = 509717184.

The previous prime is 1020430447. The next prime is 1020430459. The reversal of 1020430456 is 6540340201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020430456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020430459) 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, 53476 + ... + 70003.

It is an arithmetic number, because the mean of its divisors is an integer number (119698425).

Almost surely, 2^1020430456 is an apocalyptic number.

It is an amenable number.

1020430456 is a deficient number, since it is larger than the sum of its proper divisors (894744344).

1020430456 is a wasteful number, since it uses less digits than its factorization.

1020430456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124518 (or 124514 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1020430456 is about 31944.1771845825. The cubic root of 1020430456 is about 1006.7642931697.

Adding to 1020430456 its reverse (6540340201), we get a palindrome (7560770657).

The spelling of 1020430456 in words is "one billion, twenty million, four hundred thirty thousand, four hundred fifty-six".