42021152 has 12 divisors (see below), whose sum is σ = 82729206. Its totient is φ = 21010560.

The previous prime is 42021143. The next prime is 42021173. The reversal of 42021152 is 25112024.

It can be written as a sum of positive squares in only one way, i.e., 36048016 + 5973136 = 6004^2 + 2444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42021152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656549 + ... + 656612.

Almost surely, 2^42021152 is an apocalyptic number.

It is an amenable number.

42021152 is a deficient number, since it is larger than the sum of its proper divisors (40708054).

42021152 is a wasteful number, since it uses less digits than its factorization.

42021152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313171 (or 1313163 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 42021152 is about 6482.3724052233. The cubic root of 42021152 is about 347.6610078031.

Adding to 42021152 its reverse (25112024), we get a palindrome (67133176).

The spelling of 42021152 in words is "forty-two million, twenty-one thousand, one hundred fifty-two".