42534031 has 2 divisors, whose sum is σ = 42534032. Its totient is φ = 42534030.

The previous prime is 42534001. The next prime is 42534043. The reversal of 42534031 is 13043524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42534031 - 2⁵ = 42533999 is a prime.

It is a super-2 number, since 2×42534031² = 3618287586217922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42533993 and 42534011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42534001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21267015 + 21267016.

It is an arithmetic number, because the mean of its divisors is an integer number (21267016).

Almost surely, 2^42534031 is an apocalyptic number.

42534031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42534031 is an equidigital number, since it uses as much as digits as its factorization.

42534031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42534031 is about 6521.8119414776. The cubic root of 42534031 is about 349.0697227716.

Adding to 42534031 its reverse (13043524), we get a palindrome (55577555).

The spelling of 42534031 in words is "forty-two million, five hundred thirty-four thousand, thirty-one".