7640342 has 4 divisors (see below), whose sum is σ = 11460516. Its totient is φ = 3820170.

The previous prime is 7640341. The next prime is 7640351. The reversal of 7640342 is 2430467.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2430467 = 13 ⋅186959.

It is a d-powerful number, because it can be written as 7⁸ + 6⁷ + 4⁴ + 0 + 3¹³ + 4⁵ + 2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910084 + ... + 1910087.

It is an arithmetic number, because the mean of its divisors is an integer number (2865129).

Almost surely, 2^7640342 is an apocalyptic number.

7640342 is a deficient number, since it is larger than the sum of its proper divisors (3820174).

7640342 is a wasteful number, since it uses less digits than its factorization.

7640342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820173.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 7640342 is about 2764.1168571535. The cubic root of 7640342 is about 196.9567788920.

The spelling of 7640342 in words is "seven million, six hundred forty thousand, three hundred forty-two".