1020423443434 has 16 divisors (see below), whose sum is σ = 1531381392000. Its totient is φ = 509963037840.

The previous prime is 1020423443423. The next prime is 1020423443443. The reversal of 1020423443434 is 4343443240201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020423443434.

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, 71147104 + ... + 71161444.

It is an arithmetic number, because the mean of its divisors is an integer number (95711337000).

Almost surely, 2^{1020423443434} is an apocalyptic number.

1020423443434 is a deficient number, since it is larger than the sum of its proper divisors (510957948566).

1020423443434 is a wasteful number, since it uses less digits than its factorization.

1020423443434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29205.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 1020423443434 its reverse (4343443240201), we get a palindrome (5363866683635).

The spelling of 1020423443434 in words is "one trillion, twenty billion, four hundred twenty-three million, four hundred forty-three thousand, four hundred thirty-four".