42229157 has 2 divisors, whose sum is σ = 42229158. Its totient is φ = 42229156.

The previous prime is 42229147. The next prime is 42229163. The reversal of 42229157 is 75192224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42172036 + 57121 = 6494^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 42229157 - 2⁶ = 42229093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42229147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21114578 + 21114579.

It is an arithmetic number, because the mean of its divisors is an integer number (21114579).

Almost surely, 2^42229157 is an apocalyptic number.

It is an amenable number.

42229157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42229157 is an equidigital number, since it uses as much as digits as its factorization.

42229157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 42229157 is about 6498.3964945208. The cubic root of 42229157 is about 348.2337053712.

The spelling of 42229157 in words is "forty-two million, two hundred twenty-nine thousand, one hundred fifty-seven".