1542421402503 has 16 divisors (see below), whose sum is σ = 2168070721536. Its totient is φ = 973938013920.

The previous prime is 1542421402469. The next prime is 1542421402531. The reversal of 1542421402503 is 3052041242451.

It is not a de Polignac number, because 1542421402503 - 2¹² = 1542421398407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542421402603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176433676 + ... + 176442417.

It is an arithmetic number, because the mean of its divisors is an integer number (135504420096).

Almost surely, 2^{1542421402503} is an apocalyptic number.

1542421402503 is a deficient number, since it is larger than the sum of its proper divisors (625649319033).

1542421402503 is a wasteful number, since it uses less digits than its factorization.

1542421402503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352876174.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 1542421402503 its reverse (3052041242451), we get a palindrome (4594462644954).

The spelling of 1542421402503 in words is "one trillion, five hundred forty-two billion, four hundred twenty-one million, four hundred two thousand, five hundred three".