1021503428042 has 8 divisors (see below), whose sum is σ = 1612900149600. Its totient is φ = 483870044844.

The previous prime is 1021503428041. The next prime is 1021503428063. The reversal of 1021503428042 is 2408243051201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1021503428041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13440834542 + ... + 13440834617.

It is an arithmetic number, because the mean of its divisors is an integer number (201612518700).

Almost surely, 2^{1021503428042} is an apocalyptic number.

1021503428042 is a deficient number, since it is larger than the sum of its proper divisors (591396721558).

1021503428042 is a wasteful number, since it uses less digits than its factorization.

1021503428042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26881669180.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 1021503428042 its reverse (2408243051201), we get a palindrome (3429746479243).

The spelling of 1021503428042 in words is "one trillion, twenty-one billion, five hundred three million, four hundred twenty-eight thousand, forty-two".