42145279 has 8 divisors (see below), whose sum is σ = 46053072. Its totient is φ = 38250240.

The previous prime is 42145277. The next prime is 42145291. The reversal of 42145279 is 97254124.

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 42145279 - 2¹ = 42145277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42145277) 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, 4557 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (5756634).

Almost surely, 2^42145279 is an apocalyptic number.

42145279 is a deficient number, since it is larger than the sum of its proper divisors (3907793).

42145279 is a wasteful number, since it uses less digits than its factorization.

42145279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377.

The product of its digits is 20160, while the sum is 34.

The square root of 42145279 is about 6491.9395406920. The cubic root of 42145279 is about 348.0029918931.

It can be divided in two parts, 42145 and 279, that added together give a palindrome (42424).

The spelling of 42145279 in words is "forty-two million, one hundred forty-five thousand, two hundred seventy-nine".