7142855 has 4 divisors (see below), whose sum is σ = 8571432. Its totient is φ = 5714280.

The previous prime is 7142851. The next prime is 7142869. The reversal of 7142855 is 5582417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5582417 = 449 ⋅12433.

It is not a de Polignac number, because 7142855 - 2² = 7142851 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 (7142851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714281 + ... + 714290.

It is an arithmetic number, because the mean of its divisors is an integer number (2142858).

Almost surely, 2^7142855 is an apocalyptic number.

7142855 is a deficient number, since it is larger than the sum of its proper divisors (1428577).

7142855 is a wasteful number, since it uses less digits than its factorization.

7142855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428576.

The product of its digits is 11200, while the sum is 32.

The square root of 7142855 is about 2672.6120182324. The cubic root of 7142855 is about 192.5856592968.

It can be divided in two parts, 7142 and 855, that added together give a palindrome (7997).

The spelling of 7142855 in words is "seven million, one hundred forty-two thousand, eight hundred fifty-five".