42145147 has 6 divisors (see below), whose sum is σ = 46324964. Its totient is φ = 38313660.

The previous prime is 42145141. The next prime is 42145153. The reversal of 42145147 is 74154124.

42145147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42145141) and next prime (42145153).

It is not a de Polignac number, because 42145147 - 2²³ = 33756539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42145141) 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 5 ways as a sum of consecutive naturals, for example, 174033 + ... + 174274.

Almost surely, 2^42145147 is an apocalyptic number.

42145147 is a deficient number, since it is larger than the sum of its proper divisors (4179817).

42145147 is a wasteful number, since it uses less digits than its factorization.

42145147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348329 (or 348318 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 42145147 is about 6491.9293742307. The cubic root of 42145147 is about 348.0026285749.

The spelling of 42145147 in words is "forty-two million, one hundred forty-five thousand, one hundred forty-seven".