42020512 has 12 divisors (see below), whose sum is σ = 82727946. Its totient is φ = 21010240.

The previous prime is 42020509. The next prime is 42020527. The reversal of 42020512 is 21502024.

It can be written as a sum of positive squares in only one way, i.e., 22695696 + 19324816 = 4764^2 + 4396^2 .

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656539 + ... + 656602.

Almost surely, 2^42020512 is an apocalyptic number.

It is an amenable number.

42020512 is a deficient number, since it is larger than the sum of its proper divisors (40707434).

42020512 is a wasteful number, since it uses less digits than its factorization.

42020512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313151 (or 1313143 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42020512 is about 6482.3230403922. The cubic root of 42020512 is about 347.6592427858.

Adding to 42020512 its reverse (21502024), we get a palindrome (63522536).

The spelling of 42020512 in words is "forty-two million, twenty thousand, five hundred twelve".