42020007 has 4 divisors (see below), whose sum is σ = 56026680. Its totient is φ = 28013336.

The previous prime is 42020003. The next prime is 42020023. The reversal of 42020007 is 70002024.

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 42020007 - 2² = 42020003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7003332 + ... + 7003337.

It is an arithmetic number, because the mean of its divisors is an integer number (14006670).

Almost surely, 2^42020007 is an apocalyptic number.

42020007 is a deficient number, since it is larger than the sum of its proper divisors (14006673).

42020007 is a wasteful number, since it uses less digits than its factorization.

42020007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14006672.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 42020007 is about 6482.2840881899. The cubic root of 42020007 is about 347.6578500643.

The spelling of 42020007 in words is "forty-two million, twenty thousand, seven".