42063431 has 4 divisors (see below), whose sum is σ = 42223632. Its totient is φ = 41903232.

The previous prime is 42063421. The next prime is 42063433. The reversal of 42063431 is 13436024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42063431 - 2²² = 37869127 is a prime.

It is a super-2 number, since 2×42063431² = 3538664454983522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42063397 and 42063406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42063433) 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, 79706 + ... + 80231.

It is an arithmetic number, because the mean of its divisors is an integer number (10555908).

Almost surely, 2^42063431 is an apocalyptic number.

42063431 is a deficient number, since it is larger than the sum of its proper divisors (160201).

42063431 is a wasteful number, since it uses less digits than its factorization.

42063431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160200.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 42063431 is about 6485.6326599646. The cubic root of 42063431 is about 347.7775668228. Note that the first 3 decimals are identical.

Adding to 42063431 its reverse (13436024), we get a palindrome (55499455).

The spelling of 42063431 in words is "forty-two million, sixty-three thousand, four hundred thirty-one".