42248407 has 4 divisors (see below), whose sum is σ = 42301440. Its totient is φ = 42195376.

The previous prime is 42248399. The next prime is 42248449. The reversal of 42248407 is 70484224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42248407 - 2³ = 42248399 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42248707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25303 + ... + 26920.

It is an arithmetic number, because the mean of its divisors is an integer number (10575360).

Almost surely, 2^42248407 is an apocalyptic number.

42248407 is a deficient number, since it is larger than the sum of its proper divisors (53033).

42248407 is an equidigital number, since it uses as much as digits as its factorization.

42248407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53032.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 42248407 is about 6499.8774603834. The cubic root of 42248407 is about 348.2866110015.

The spelling of 42248407 in words is "forty-two million, two hundred forty-eight thousand, four hundred seven".