42957320 has 128 divisors (see below), whose sum is σ = 117504000. Its totient is φ = 14112000.

The previous prime is 42957319. The next prime is 42957329. The reversal of 42957320 is 2375924.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42957329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425270 + ... + 425370.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^42957320 is an apocalyptic number.

42957320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42957320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58752000).

42957320 is an abundant number, since it is smaller than the sum of its proper divisors (74546680).

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

42957320 is a wasteful number, since it uses less digits than its factorization.

42957320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 42957320 is about 6554.1833968848. The cubic root of 42957320 is about 350.2238567927.

The spelling of 42957320 in words is "forty-two million, nine hundred fifty-seven thousand, three hundred twenty".