42020474 has 4 divisors (see below), whose sum is σ = 63030714. Its totient is φ = 21010236.

The previous prime is 42020441. The next prime is 42020483. The reversal of 42020474 is 47402024.

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., 38353249 + 3667225 = 6193^2 + 1915^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505117 + ... + 10505120.

Almost surely, 2^42020474 is an apocalyptic number.

42020474 is a deficient number, since it is larger than the sum of its proper divisors (21010240).

42020474 is a wasteful number, since it uses less digits than its factorization.

42020474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21010239.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 42020474 is about 6482.3201093436. The cubic root of 42020474 is about 347.6591379874.

Adding to 42020474 its reverse (47402024), we get a palindrome (89422498).

The spelling of 42020474 in words is "forty-two million, twenty thousand, four hundred seventy-four".