42551013 has 8 divisors (see below), whose sum is σ = 59720800. Its totient is φ = 26874288.

The previous prime is 42550993. The next prime is 42551021. The reversal of 42551013 is 31015524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42551013 - 2¹⁷ = 42419941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42551023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373198 + ... + 373311.

It is an arithmetic number, because the mean of its divisors is an integer number (7465100).

Almost surely, 2^42551013 is an apocalyptic number.

It is an amenable number.

42551013 is a deficient number, since it is larger than the sum of its proper divisors (17169787).

42551013 is a wasteful number, since it uses less digits than its factorization.

42551013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746531.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 42551013 is about 6523.1137503496. The cubic root of 42551013 is about 349.1161727408.

Adding to 42551013 its reverse (31015524), we get a palindrome (73566537).

The spelling of 42551013 in words is "forty-two million, five hundred fifty-one thousand, thirteen".