42505270 has 16 divisors (see below), whose sum is σ = 81010368. Its totient is φ = 16001920.

The previous prime is 42505231. The next prime is 42505277. The reversal of 42505270 is 7250524.

It is a super-3 number, since 3×42505270³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124846 + ... + 125185.

It is an arithmetic number, because the mean of its divisors is an integer number (5063148).

Almost surely, 2^42505270 is an apocalyptic number.

42505270 is a deficient number, since it is larger than the sum of its proper divisors (38505098).

42505270 is a wasteful number, since it uses less digits than its factorization.

42505270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250055.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 42505270 is about 6519.6065832226. The cubic root of 42505270 is about 348.9910261155.

Adding to 42505270 its reverse (7250524), we get a palindrome (49755794).

The spelling of 42505270 in words is "forty-two million, five hundred five thousand, two hundred seventy".