42021340144 has 20 divisors (see below), whose sum is σ = 93047253424. Its totient is φ = 18009145728.

The previous prime is 42021340117. The next prime is 42021340187. The reversal of 42021340144 is 44104312024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187595157 + ... + 187595380.

Almost surely, 2^42021340144 is an apocalyptic number.

It is an amenable number.

42021340144 is an abundant number, since it is smaller than the sum of its proper divisors (51025913280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42021340144 is a wasteful number, since it uses less digits than its factorization.

42021340144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375190552 (or 375190546 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42021340144 its reverse (44104312024), we get a palindrome (86125652168).

The spelling of 42021340144 in words is "forty-two billion, twenty-one million, three hundred forty thousand, one hundred forty-four".