42148039 has 4 divisors (see below), whose sum is σ = 42297256. Its totient is φ = 41998824.

The previous prime is 42148037. The next prime is 42148081. The reversal of 42148039 is 93084124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42148039 - 2¹ = 42148037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42148039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42148037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74184 + ... + 74749.

It is an arithmetic number, because the mean of its divisors is an integer number (10574314).

Almost surely, 2^42148039 is an apocalyptic number.

42148039 is a deficient number, since it is larger than the sum of its proper divisors (149217).

42148039 is a wasteful number, since it uses less digits than its factorization.

42148039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149216.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42148039 is about 6492.1521085076. The cubic root of 42148039 is about 348.0105883729.

The spelling of 42148039 in words is "forty-two million, one hundred forty-eight thousand, thirty-nine".