7142399 has 8 divisors (see below), whose sum is σ = 7886592. Its totient is φ = 6414040.

The previous prime is 7142383. The next prime is 7142413. The reversal of 7142399 is 9932417.

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 7142399 - 2⁴ = 7142383 is a prime.

It is a d-powerful number, because it can be written as 7² + 1 + 4⁹ + 2²¹ + 3 + 9² + 9⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2999 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (985824).

Almost surely, 2^7142399 is an apocalyptic number.

7142399 is a deficient number, since it is larger than the sum of its proper divisors (744193).

7142399 is a wasteful number, since it uses less digits than its factorization.

7142399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7917.

The product of its digits is 13608, while the sum is 35.

The square root of 7142399 is about 2672.5267070695. The cubic root of 7142399 is about 192.5815609856.

It can be divided in two parts, 714 and 2399, that added together give a palindrome (3113).

The spelling of 7142399 in words is "seven million, one hundred forty-two thousand, three hundred ninety-nine".