42450407 has 4 divisors (see below), whose sum is σ = 42465456. Its totient is φ = 42435360.

The previous prime is 42450391. The next prime is 42450451. The reversal of 42450407 is 70405424.

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 42450407 - 2⁴ = 42450391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42450487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883 + ... + 9404.

It is an arithmetic number, because the mean of its divisors is an integer number (10616364).

Almost surely, 2^42450407 is an apocalyptic number.

42450407 is a deficient number, since it is larger than the sum of its proper divisors (15049).

42450407 is a wasteful number, since it uses less digits than its factorization.

42450407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42450407 is about 6515.3976854832. The cubic root of 42450407 is about 348.8408099318.

The spelling of 42450407 in words is "forty-two million, four hundred fifty thousand, four hundred seven".