42148157 has 2 divisors, whose sum is σ = 42148158. Its totient is φ = 42148156.

The previous prime is 42148153. The next prime is 42148193. The reversal of 42148157 is 75184124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35868121 + 6280036 = 5989^2 + 2506^2 .

It is a cyclic number.

It is not a de Polignac number, because 42148157 - 2² = 42148153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42148153) 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, 21074078 + 21074079.

It is an arithmetic number, because the mean of its divisors is an integer number (21074079).

Almost surely, 2^42148157 is an apocalyptic number.

It is an amenable number.

42148157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42148157 is an equidigital number, since it uses as much as digits as its factorization.

42148157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 42148157 is about 6492.1611963968. The cubic root of 42148157 is about 348.0109131426.

The spelling of 42148157 in words is "forty-two million, one hundred forty-eight thousand, one hundred fifty-seven".