42280257 has 8 divisors (see below), whose sum is σ = 56733376. Its totient is φ = 28006992.

The previous prime is 42280243. The next prime is 42280261. The reversal of 42280257 is 75208224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42280257 - 2¹⁴ = 42263873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42280297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44413 + ... + 45354.

It is an arithmetic number, because the mean of its divisors is an integer number (7091672).

Almost surely, 2^42280257 is an apocalyptic number.

It is an amenable number.

42280257 is a deficient number, since it is larger than the sum of its proper divisors (14453119).

42280257 is a wasteful number, since it uses less digits than its factorization.

42280257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89927.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42280257 is about 6502.3270449894. The cubic root of 42280257 is about 348.3741104913.

The spelling of 42280257 in words is "forty-two million, two hundred eighty thousand, two hundred fifty-seven".