7142289 has 32 divisors (see below), whose sum is σ = 12134400. Its totient is φ = 3704400.

The previous prime is 7142269. The next prime is 7142293. The reversal of 7142289 is 9822417.

It is a happy number.

It is not a de Polignac number, because 7142289 - 2¹² = 7138193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a d-powerful number, because it can be written as 7 + 1 + 4⁹ + 2³ + 2²¹ + 8 + 9⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11004 + ... + 11634.

It is an arithmetic number, because the mean of its divisors is an integer number (379200).

Almost surely, 2^7142289 is an apocalyptic number.

It is an amenable number.

7142289 is a deficient number, since it is larger than the sum of its proper divisors (4992111).

7142289 is a wasteful number, since it uses less digits than its factorization.

7142289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 652 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 7142289 is about 2672.5061272147. The cubic root of 7142289 is about 192.5805723317.

It can be divided in two parts, 714 and 2289, that added together give a palindrome (3003).

The spelling of 7142289 in words is "seven million, one hundred forty-two thousand, two hundred eighty-nine".