7142455 has 4 divisors (see below), whose sum is σ = 8570952. Its totient is φ = 5713960.

The previous prime is 7142437. The next prime is 7142479. The reversal of 7142455 is 5542417.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7142455 - 2⁹ = 7141943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714241 + ... + 714250.

It is an arithmetic number, because the mean of its divisors is an integer number (2142738).

Almost surely, 2^7142455 is an apocalyptic number.

7142455 is a deficient number, since it is larger than the sum of its proper divisors (1428497).

7142455 is a wasteful number, since it uses less digits than its factorization.

7142455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428496.

The product of its digits is 5600, while the sum is 28.

The square root of 7142455 is about 2672.5371840257. The cubic root of 7142455 is about 192.5820642964.

The spelling of 7142455 in words is "seven million, one hundred forty-two thousand, four hundred fifty-five".