42472013 has 4 divisors (see below), whose sum is σ = 42983808. Its totient is φ = 41960220.

The previous prime is 42472009. The next prime is 42472021. The reversal of 42472013 is 31027424.

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 not a de Polignac number, because 42472013 - 2² = 42472009 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 42472013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42472093) 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, 255773 + ... + 255938.

It is an arithmetic number, because the mean of its divisors is an integer number (10745952).

Almost surely, 2^42472013 is an apocalyptic number.

It is an amenable number.

42472013 is a deficient number, since it is larger than the sum of its proper divisors (511795).

42472013 is an equidigital number, since it uses as much as digits as its factorization.

42472013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511794.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42472013 is about 6517.0555467941. The cubic root of 42472013 is about 348.8999831076.

Adding to 42472013 its reverse (31027424), we get a palindrome (73499437).

The spelling of 42472013 in words is "forty-two million, four hundred seventy-two thousand, thirteen".