42357380 has 48 divisors (see below), whose sum is σ = 96801264. Its totient is φ = 15475200.

The previous prime is 42357373. The next prime is 42357383. The reversal of 42357380 is 8375324.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 341056 + 42016324 = 584^2 + 6482^2 .

It is not an unprimeable number, because it can be changed into a prime (42357383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25454 + ... + 27066.

It is an arithmetic number, because the mean of its divisors is an integer number (2016693).

Almost surely, 2^42357380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42357380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48400632).

42357380 is an abundant number, since it is smaller than the sum of its proper divisors (54443884).

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

42357380 is a wasteful number, since it uses less digits than its factorization.

42357380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 1734 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 42357380 is about 6508.2547583819. The cubic root of 42357380 is about 348.5858037544.

The spelling of 42357380 in words is "forty-two million, three hundred fifty-seven thousand, three hundred eighty".