42570420 has 24 divisors (see below), whose sum is σ = 119197344. Its totient is φ = 11352096.

The previous prime is 42570419. The next prime is 42570427. The reversal of 42570420 is 2407524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42570427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354694 + ... + 354813.

It is an arithmetic number, because the mean of its divisors is an integer number (4966556).

Almost surely, 2^42570420 is an apocalyptic number.

It is an amenable number.

42570420 is an abundant number, since it is smaller than the sum of its proper divisors (76626924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42570420 is a wasteful number, since it uses less digits than its factorization.

42570420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709519 (or 709517 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 42570420 is about 6524.6011372344. The cubic root of 42570420 is about 349.1692405552.

Adding to 42570420 its reverse (2407524), we get a palindrome (44977944).

The spelling of 42570420 in words is "forty-two million, five hundred seventy thousand, four hundred twenty".