42549007 has 4 divisors (see below), whose sum is σ = 42579000. Its totient is φ = 42519016.

The previous prime is 42548993. The next prime is 42549029. The reversal of 42549007 is 70094524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42549007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42549007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42549047) 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, 12757 + ... + 15742.

It is an arithmetic number, because the mean of its divisors is an integer number (10644750).

Almost surely, 2^42549007 is an apocalyptic number.

42549007 is a deficient number, since it is larger than the sum of its proper divisors (29993).

42549007 is a wasteful number, since it uses less digits than its factorization.

42549007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29992.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42549007 is about 6522.9599876130. The cubic root of 42549007 is about 349.1106864786.

The spelling of 42549007 in words is "forty-two million, five hundred forty-nine thousand, seven".