42505370 has 16 divisors (see below), whose sum is σ = 77807520. Its totient is φ = 16713744.

The previous prime is 42505369. The next prime is 42505381. The reversal of 42505370 is 7350524.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35432 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (4862970).

Almost surely, 2^42505370 is an apocalyptic number.

42505370 is a deficient number, since it is larger than the sum of its proper divisors (35302150).

42505370 is a wasteful number, since it uses less digits than its factorization.

42505370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72109.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 42505370 is about 6519.6142523925. The cubic root of 42505370 is about 348.9912997998.

Adding to 42505370 its reverse (7350524), we get a palindrome (49855894).

It can be divided in two parts, 42505 and 370, that added together give a cube (42875 = 35³).

The spelling of 42505370 in words is "forty-two million, five hundred five thousand, three hundred seventy".