42073828 has 18 divisors (see below), whose sum is σ = 77711046. Its totient is φ = 19929024.

The previous prime is 42073817. The next prime is 42073853. The reversal of 42073828 is 82837024.

It can be written as a sum of positive squares in only one way, i.e., 41242084 + 831744 = 6422^2 + 912^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42073793 and 42073802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13125 + ... + 16012.

Almost surely, 2^42073828 is an apocalyptic number.

It is an amenable number.

42073828 is a deficient number, since it is larger than the sum of its proper divisors (35637218).

42073828 is a wasteful number, since it uses less digits than its factorization.

42073828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29179 (or 29158 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 42073828 is about 6486.4341513654. The cubic root of 42073828 is about 347.8062183569.

The spelling of 42073828 in words is "forty-two million, seventy-three thousand, eight hundred twenty-eight".