7042155 has 16 divisors (see below), whose sum is σ = 11310624. Its totient is φ = 3741440.

The previous prime is 7042129. The next prime is 7042183. The reversal of 7042155 is 5512407.

It is not a de Polignac number, because 7042155 - 2⁸ = 7041899 is a prime.

7042155 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4015 + ... + 5495.

It is an arithmetic number, because the mean of its divisors is an integer number (706914).

Almost surely, 2^7042155 is an apocalyptic number.

7042155 is a deficient number, since it is larger than the sum of its proper divisors (4268469).

7042155 is a wasteful number, since it uses less digits than its factorization.

7042155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 7042155 is about 2653.7058993038. The cubic root of 7042155 is about 191.6763481772.

The spelling of 7042155 in words is "seven million, forty-two thousand, one hundred fifty-five".