42020144 has 10 divisors (see below), whose sum is σ = 81414060. Its totient is φ = 21010064.

The previous prime is 42020131. The next prime is 42020171. The reversal of 42020144 is 44102024.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313114 + ... + 1313145.

It is an arithmetic number, because the mean of its divisors is an integer number (8141406).

Almost surely, 2^42020144 is an apocalyptic number.

It is an amenable number.

42020144 is a deficient number, since it is larger than the sum of its proper divisors (39393916).

42020144 is a wasteful number, since it uses less digits than its factorization.

42020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626267 (or 2626261 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42020144 is about 6482.2946554442. The cubic root of 42020144 is about 347.6582278928.

Adding to 42020144 its reverse (44102024), we get a palindrome (86122168).

The spelling of 42020144 in words is "forty-two million, twenty thousand, one hundred forty-four".