42201314544521 has 4 divisors (see below), whose sum is σ = 46037797684944. Its totient is φ = 38364831404100.

The previous prime is 42201314544503. The next prime is 42201314544547. The reversal of 42201314544521 is 12544541310224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42201314544521 - 2¹⁰ = 42201314543497 is a prime.

It is a super-2 number, since 2×42201314544521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42201314547521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918241570195 + ... + 1918241570216.

It is an arithmetic number, because the mean of its divisors is an integer number (11509449421236).

Almost surely, 2^{42201314544521} is an apocalyptic number.

It is an amenable number.

42201314544521 is a deficient number, since it is larger than the sum of its proper divisors (3836483140423).

42201314544521 is a wasteful number, since it uses less digits than its factorization.

42201314544521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836483140422.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 42201314544521 its reverse (12544541310224), we get a palindrome (54745855854745).

The spelling of 42201314544521 in words is "forty-two trillion, two hundred one billion, three hundred fourteen million, five hundred forty-four thousand, five hundred twenty-one".