42211157 has 2 divisors, whose sum is σ = 42211158. Its totient is φ = 42211156.

The previous prime is 42211129. The next prime is 42211163. The reversal of 42211157 is 75111224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38365636 + 3845521 = 6194^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 42211157 - 2⁶ = 42211093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42211657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105578 + 21105579.

It is an arithmetic number, because the mean of its divisors is an integer number (21105579).

Almost surely, 2^42211157 is an apocalyptic number.

It is an amenable number.

42211157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211157 is an equidigital number, since it uses as much as digits as its factorization.

42211157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560, while the sum is 23.

The square root of 42211157 is about 6497.0113898623. The cubic root of 42211157 is about 348.1842206238.

The spelling of 42211157 in words is "forty-two million, two hundred eleven thousand, one hundred fifty-seven".