42000770 has 16 divisors (see below), whose sum is σ = 86401728. Its totient is φ = 14400240.

The previous prime is 42000731. The next prime is 42000779. The reversal of 42000770 is 7700024.

It is not an unprimeable number, because it can be changed into a prime (42000779) 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, 299936 + ... + 300075.

It is an arithmetic number, because the mean of its divisors is an integer number (5400108).

Almost surely, 2^42000770 is an apocalyptic number.

42000770 is an abundant number, since it is smaller than the sum of its proper divisors (44400958).

42000770 is a wasteful number, since it uses less digits than its factorization.

42000770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600025.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 42000770 is about 6480.8001049253. The cubic root of 42000770 is about 347.6047887142.

Adding to 42000770 its reverse (7700024), we get a palindrome (49700794).

The spelling of 42000770 in words is "forty-two million, seven hundred seventy", and thus it is an aban number.