42450551244021 has 32 divisors (see below), whose sum is σ = 61260783408000. Its totient is φ = 26063678354688.

The previous prime is 42450551243879. The next prime is 42450551244071. The reversal of 42450551244021 is 12044215505424.

It is not a de Polignac number, because 42450551244021 - 2⁴⁵ = 7266179155189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42450551244071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64128606 + ... + 64787183.

It is an arithmetic number, because the mean of its divisors is an integer number (1914399481500).

Almost surely, 2^{42450551244021} is an apocalyptic number.

It is an amenable number.

42450551244021 is a deficient number, since it is larger than the sum of its proper divisors (18810232163979).

42450551244021 is a wasteful number, since it uses less digits than its factorization.

42450551244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128915973.

The product of its (nonzero) digits is 256000, while the sum is 39.

Adding to 42450551244021 its reverse (12044215505424), we get a palindrome (54494766749445).

The spelling of 42450551244021 in words is "forty-two trillion, four hundred fifty billion, five hundred fifty-one million, two hundred forty-four thousand, twenty-one".