42191053 has 2 divisors, whose sum is σ = 42191054. Its totient is φ = 42191052.

The previous prime is 42191011. The next prime is 42191057. The reversal of 42191053 is 35019124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 6215049 = 5998^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 42191053 - 2⁹ = 42190541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42191057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21095526 + 21095527.

It is an arithmetic number, because the mean of its divisors is an integer number (21095527).

Almost surely, 2^42191053 is an apocalyptic number.

It is an amenable number.

42191053 is a deficient number, since it is larger than the sum of its proper divisors (1).

42191053 is an equidigital number, since it uses as much as digits as its factorization.

42191053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 42191053 is about 6495.4640326924. The cubic root of 42191053 is about 348.1289350260.

The spelling of 42191053 in words is "forty-two million, one hundred ninety-one thousand, fifty-three".