42672013 has 4 divisors (see below), whose sum is σ = 42834528. Its totient is φ = 42509500.

The previous prime is 42671977. The next prime is 42672031. The reversal of 42672013 is 31027624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42672013 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 (42672713) 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, 80863 + ... + 81388.

It is an arithmetic number, because the mean of its divisors is an integer number (10708632).

Almost surely, 2^42672013 is an apocalyptic number.

It is an amenable number.

42672013 is a deficient number, since it is larger than the sum of its proper divisors (162515).

42672013 is a wasteful number, since it uses less digits than its factorization.

42672013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162514.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 42672013 is about 6532.3818779983. The cubic root of 42672013 is about 349.4467804486.

Adding to 42672013 its reverse (31027624), we get a palindrome (73699637).

The spelling of 42672013 in words is "forty-two million, six hundred seventy-two thousand, thirteen".