42042855 has 8 divisors (see below), whose sum is σ = 67268592. Its totient is φ = 22422848.

The previous prime is 42042829. The next prime is 42042901. The reversal of 42042855 is 55824024.

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 42042855 - 2⁵ = 42042823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401414 + ... + 1401443.

It is an arithmetic number, because the mean of its divisors is an integer number (8408574).

Almost surely, 2^42042855 is an apocalyptic number.

42042855 is a deficient number, since it is larger than the sum of its proper divisors (25225737).

42042855 is a wasteful number, since it uses less digits than its factorization.

42042855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802865.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 42042855 is about 6484.0461904585. The cubic root of 42042855 is about 347.7208505876.

Adding to 42042855 its reverse (55824024), we get a palindrome (97866879).

The spelling of 42042855 in words is "forty-two million, forty-two thousand, eight hundred fifty-five".