42431013 has 16 divisors (see below), whose sum is σ = 63033600. Its totient is φ = 28209600.

The previous prime is 42431003. The next prime is 42431041. The reversal of 42431013 is 31013424.

It is not a de Polignac number, because 42431013 - 2¹⁴ = 42414629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8868 + ... + 12786.

It is an arithmetic number, because the mean of its divisors is an integer number (3939600).

Almost surely, 2^42431013 is an apocalyptic number.

It is an amenable number.

42431013 is a deficient number, since it is larger than the sum of its proper divisors (20602587).

42431013 is a wasteful number, since it uses less digits than its factorization.

42431013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329 (or 4323 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 42431013 is about 6513.9091949458. The cubic root of 42431013 is about 348.7876777422.

Adding to 42431013 its reverse (31013424), we get a palindrome (73444437).

The spelling of 42431013 in words is "forty-two million, four hundred thirty-one thousand, thirteen".