42270340 has 36 divisors (see below), whose sum is σ = 103262796. Its totient is φ = 14492352.

The previous prime is 42270331. The next prime is 42270341. The reversal of 42270340 is 4307224.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 30118144 = 3486^2 + 5488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42270341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20587 + ... + 22546.

It is an arithmetic number, because the mean of its divisors is an integer number (2868411).

Almost surely, 2^42270340 is an apocalyptic number.

It is an amenable number.

42270340 is an abundant number, since it is smaller than the sum of its proper divisors (60992456).

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

42270340 is a wasteful number, since it uses less digits than its factorization.

42270340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43156 (or 43147 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42270340 is about 6501.5644271206. The cubic root of 42270340 is about 348.3468708571.

Adding to 42270340 its reverse (4307224), we get a palindrome (46577564).

The spelling of 42270340 in words is "forty-two million, two hundred seventy thousand, three hundred forty".