1020420403204 has 12 divisors (see below), whose sum is σ = 1793207404800. Its totient is φ = 508075430408.

The previous prime is 1020420403153. The next prime is 1020420403241. The reversal of 1020420403204 is 4023040240201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533691724 + ... + 533693635.

It is an arithmetic number, because the mean of its divisors is an integer number (149433950400).

Almost surely, 2^{1020420403204} is an apocalyptic number.

It is an amenable number.

1020420403204 is a deficient number, since it is larger than the sum of its proper divisors (772787001596).

1020420403204 is a wasteful number, since it uses less digits than its factorization.

1020420403204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067385602 (or 1067385600 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 1020420403204 its reverse (4023040240201), we get a palindrome (5043460643405).

The spelling of 1020420403204 in words is "one trillion, twenty billion, four hundred twenty million, four hundred three thousand, two hundred four".