42287157 has 16 divisors (see below), whose sum is σ = 68343360. Its totient is φ = 25628400.

The previous prime is 42287153. The next prime is 42287159. The reversal of 42287157 is 75178224.

42287157 is a `hidden beast` number, since 422 + 87 + 157 = 666.

It is not a de Polignac number, because 42287157 - 2² = 42287153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42287153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70894 + ... + 71487.

It is an arithmetic number, because the mean of its divisors is an integer number (4271460).

Almost surely, 2^42287157 is an apocalyptic number.

It is an amenable number.

42287157 is a deficient number, since it is larger than the sum of its proper divisors (26056203).

42287157 is a wasteful number, since it uses less digits than its factorization.

42287157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142401 (or 142395 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 42287157 is about 6502.8576026236. The cubic root of 42287157 is about 348.3930606332.

The spelling of 42287157 in words is "forty-two million, two hundred eighty-seven thousand, one hundred fifty-seven".