42072026 has 4 divisors (see below), whose sum is σ = 63108042. Its totient is φ = 21036012.

The previous prime is 42072013. The next prime is 42072031. The reversal of 42072026 is 62027024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32775625 + 9296401 = 5725^2 + 3049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42071992 and 42072010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10518005 + ... + 10518008.

Almost surely, 2^42072026 is an apocalyptic number.

42072026 is a deficient number, since it is larger than the sum of its proper divisors (21036016).

42072026 is a wasteful number, since it uses less digits than its factorization.

42072026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036015.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42072026 is about 6486.2952445907. The cubic root of 42072026 is about 347.8012528334.

The spelling of 42072026 in words is "forty-two million, seventy-two thousand, twenty-six".