42505510 has 32 divisors (see below), whose sum is σ = 78109920. Its totient is φ = 16651008.

The previous prime is 42505501. The next prime is 42505511. The reversal of 42505510 is 1550524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144924 + ... + 145216.

It is an arithmetic number, because the mean of its divisors is an integer number (2440935).

Almost surely, 2^42505510 is an apocalyptic number.

42505510 is a deficient number, since it is larger than the sum of its proper divisors (35604410).

42505510 is a wasteful number, since it uses less digits than its factorization.

42505510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 42505510 is about 6519.6249892153. The cubic root of 42505510 is about 348.9916829571.

The spelling of 42505510 in words is "forty-two million, five hundred five thousand, five hundred ten".