42145293 has 8 divisors (see below), whose sum is σ = 57146400. Its totient is φ = 27620528.

The previous prime is 42145291. The next prime is 42145297. The reversal of 42145293 is 39254124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42145293 - 2¹ = 42145291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42145293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42145291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118878 + ... + 119231.

It is an arithmetic number, because the mean of its divisors is an integer number (7143300).

Almost surely, 2^42145293 is an apocalyptic number.

It is an amenable number.

42145293 is a deficient number, since it is larger than the sum of its proper divisors (15001107).

42145293 is a wasteful number, since it uses less digits than its factorization.

42145293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238171.

The product of its digits is 8640, while the sum is 30.

The square root of 42145293 is about 6491.9406189521. The cubic root of 42145293 is about 348.0030304268.

The spelling of 42145293 in words is "forty-two million, one hundred forty-five thousand, two hundred ninety-three".