42052340 has 36 divisors (see below), whose sum is σ = 97073508. Its totient is φ = 15290880.

The previous prime is 42052333. The next prime is 42052343. The reversal of 42052340 is 4325024.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 34245904 = 2794^2 + 5852^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42052343) 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, 6269 + ... + 11108.

Almost surely, 2^42052340 is an apocalyptic number.

It is an amenable number.

42052340 is an abundant number, since it is smaller than the sum of its proper divisors (55021168).

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

42052340 is a wasteful number, since it uses less digits than its factorization.

42052340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17408 (or 17395 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42052340 is about 6484.7775597934. Note that the first 3 decimals coincide. The cubic root of 42052340 is about 347.7469975931.

Adding to 42052340 its reverse (4325024), we get a palindrome (46377364).

The spelling of 42052340 in words is "forty-two million, fifty-two thousand, three hundred forty".