42717320 has 32 divisors (see below), whose sum is σ = 101174400. Its totient is φ = 16187328.

The previous prime is 42717317. The next prime is 42717331. The reversal of 42717320 is 2371724.

It is a self number, because there is not a number n which added to its sum of digits gives 42717320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27344 + ... + 28863.

It is an arithmetic number, because the mean of its divisors is an integer number (3161700).

Almost surely, 2^42717320 is an apocalyptic number.

42717320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42717320 is an abundant number, since it is smaller than the sum of its proper divisors (58457080).

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

42717320 is a wasteful number, since it uses less digits than its factorization.

42717320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56237 (or 56233 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 42717320 is about 6535.8488354612. The cubic root of 42717320 is about 349.5704117167.

The spelling of 42717320 in words is "forty-two million, seven hundred seventeen thousand, three hundred twenty".