42070543 has 2 divisors, whose sum is σ = 42070544. Its totient is φ = 42070542.

The previous prime is 42070513. The next prime is 42070547. The reversal of 42070543 is 34507024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42070543 - 2⁹ = 42070031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42070547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21035271 + 21035272.

It is an arithmetic number, because the mean of its divisors is an integer number (21035272).

Almost surely, 2^42070543 is an apocalyptic number.

42070543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42070543 is an equidigital number, since it uses as much as digits as its factorization.

42070543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 42070543 is about 6486.1809256295. The cubic root of 42070543 is about 347.7971662279.

Adding to 42070543 its reverse (34507024), we get a palindrome (76577567).

The spelling of 42070543 in words is "forty-two million, seventy thousand, five hundred forty-three".