1020340434 has 32 divisors (see below), whose sum is σ = 2055642624. Its totient is φ = 337628160.

The previous prime is 1020340397. The next prime is 1020340469. The reversal of 1020340434 is 4340430201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020340434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998844 + ... + 999864.

It is an arithmetic number, because the mean of its divisors is an integer number (64238832).

Almost surely, 2^1020340434 is an apocalyptic number.

1020340434 is an abundant number, since it is smaller than the sum of its proper divisors (1035302190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020340434 is a wasteful number, since it uses less digits than its factorization.

1020340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1020340434 is about 31942.7681017159. The cubic root of 1020340434 is about 1006.7346868403.

Adding to 1020340434 its reverse (4340430201), we get a palindrome (5360770635).

The spelling of 1020340434 in words is "one billion, twenty million, three hundred forty thousand, four hundred thirty-four".