42020473 has 4 divisors (see below), whose sum is σ = 45840528. Its totient is φ = 38200420.

The previous prime is 42020441. The next prime is 42020483. The reversal of 42020473 is 37402024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42020473 - 2⁵ = 42020441 is a prime.

It is a super-2 number, since 2×42020473² = 3531440302287458, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42020483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910011 + ... + 1910032.

It is an arithmetic number, because the mean of its divisors is an integer number (11460132).

Almost surely, 2^42020473 is an apocalyptic number.

It is an amenable number.

42020473 is a deficient number, since it is larger than the sum of its proper divisors (3820055).

42020473 is a wasteful number, since it uses less digits than its factorization.

42020473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820054.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42020473 is about 6482.3200322107. The cubic root of 42020473 is about 347.6591352295.

Adding to 42020473 its reverse (37402024), we get a palindrome (79422497).

The spelling of 42020473 in words is "forty-two million, twenty thousand, four hundred seventy-three".