42148857 has 16 divisors (see below), whose sum is σ = 59102208. Its totient is φ = 26666640.

The previous prime is 42148853. The next prime is 42148867. The reversal of 42148857 is 75884124.

It is a happy number.

42148857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42148857 - 2² = 42148853 is a prime.

It is a super-2 number, since 2×42148857² = 3553052292812898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42148853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6708 + ... + 11370.

It is an arithmetic number, because the mean of its divisors is an integer number (3693888).

Almost surely, 2^42148857 is an apocalyptic number.

It is an amenable number.

42148857 is a deficient number, since it is larger than the sum of its proper divisors (16953351).

42148857 is a wasteful number, since it uses less digits than its factorization.

42148857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4820.

The product of its digits is 71680, while the sum is 39.

The square root of 42148857 is about 6492.2151073420. The cubic root of 42148857 is about 348.0128397297.

The spelling of 42148857 in words is "forty-two million, one hundred forty-eight thousand, eight hundred fifty-seven".