42879455 has 8 divisors (see below), whose sum is σ = 51492672. Its totient is φ = 34278688.

The previous prime is 42879451. The next prime is 42879461. The reversal of 42879455 is 55497824.

It is a happy number.

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 42879455 - 2² = 42879451 is a prime.

It is a super-2 number, since 2×42879455² = 3677295322194050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42879451) 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, 8237 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (6436584).

Almost surely, 2^42879455 is an apocalyptic number.

42879455 is a deficient number, since it is larger than the sum of its proper divisors (8613217).

42879455 is a wasteful number, since it uses less digits than its factorization.

42879455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225.

The product of its digits is 403200, while the sum is 44.

The square root of 42879455 is about 6548.2406033987. The cubic root of 42879455 is about 350.0121220291.

It can be divided in two parts, 42879 and 455, that added together give a palindrome (43334).

The spelling of 42879455 in words is "forty-two million, eight hundred seventy-nine thousand, four hundred fifty-five".