42040853 has 2 divisors, whose sum is σ = 42040854. Its totient is φ = 42040852.

The previous prime is 42040837. The next prime is 42040879. The reversal of 42040853 is 35804024.

It is an a-pointer prime, because the next prime (42040879) can be obtained adding 42040853 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39225169 + 2815684 = 6263^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 42040853 - 2⁴ = 42040837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42040253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020426 + 21020427.

It is an arithmetic number, because the mean of its divisors is an integer number (21020427).

Almost surely, 2^42040853 is an apocalyptic number.

It is an amenable number.

42040853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040853 is an equidigital number, since it uses as much as digits as its factorization.

42040853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42040853 is about 6483.8918097081. The cubic root of 42040853 is about 347.7153312337.

Adding to 42040853 its reverse (35804024), we get a palindrome (77844877).

The spelling of 42040853 in words is "forty-two million, forty thousand, eight hundred fifty-three".