7142638 has 8 divisors (see below), whose sum is σ = 10818288. Its totient is φ = 3536544.

The previous prime is 7142633. The next prime is 7142659. The reversal of 7142638 is 8362417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142633) 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, 17131 + ... + 17542.

It is an arithmetic number, because the mean of its divisors is an integer number (1352286).

Almost surely, 2^7142638 is an apocalyptic number.

7142638 is a deficient number, since it is larger than the sum of its proper divisors (3675650).

7142638 is a wasteful number, since it uses less digits than its factorization.

7142638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34778.

The product of its digits is 8064, while the sum is 31.

The square root of 7142638 is about 2672.5714209353. The cubic root of 7142638 is about 192.5837090257.

The spelling of 7142638 in words is "seven million, one hundred forty-two thousand, six hundred thirty-eight".