42045210 has 32 divisors (see below), whose sum is σ = 112121280. Its totient is φ = 11211984.

The previous prime is 42045203. The next prime is 42045217. The reversal of 42045210 is 1254024.

It is an interprime number because it is at equal distance from previous prime (42045203) and next prime (42045217).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42045217) 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 15 ways as a sum of consecutive naturals, for example, 77592 + ... + 78131.

It is an arithmetic number, because the mean of its divisors is an integer number (3503790).

Almost surely, 2^42045210 is an apocalyptic number.

42045210 is an abundant number, since it is smaller than the sum of its proper divisors (70076070).

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

42045210 is a wasteful number, since it uses less digits than its factorization.

42045210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155739 (or 155733 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42045210 is about 6484.2277874856. The cubic root of 42045210 is about 347.7273429101.

Adding to 42045210 its reverse (1254024), we get a palindrome (43299234).

The spelling of 42045210 in words is "forty-two million, forty-five thousand, two hundred ten".