42503441441021 has 16 divisors (see below), whose sum is σ = 48468396608640. Its totient is φ = 36894558961920.

The previous prime is 42503441440987. The next prime is 42503441441029. The reversal of 42503441441021 is 12014414430524.

It is not a de Polignac number, because 42503441441021 - 2¹⁴ = 42503441424637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42503441441029) 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, 147481520 + ... + 147769433.

It is an arithmetic number, because the mean of its divisors is an integer number (3029274788040).

Almost surely, 2^{42503441441021} is an apocalyptic number.

It is an amenable number.

42503441441021 is a deficient number, since it is larger than the sum of its proper divisors (5964955167619).

42503441441021 is a wasteful number, since it uses less digits than its factorization.

42503441441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295251556.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 42503441441021 its reverse (12014414430524), we get a palindrome (54517855871545).

The spelling of 42503441441021 in words is "forty-two trillion, five hundred three billion, four hundred forty-one million, four hundred forty-one thousand, twenty-one".