642727246 has 8 divisors (see below), whose sum is σ = 1101818160. Its totient is φ = 275454528.

The previous prime is 642727219. The next prime is 642727273.

642727246 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (642727219) and next prime (642727273).

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

It is a junction number, because it is equal to n+sod(n) for n = 642727199 and 642727208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22954531 + ... + 22954558.

It is an arithmetic number, because the mean of its divisors is an integer number (137727270).

Almost surely, 2^642727246 is an apocalyptic number.

642727246 is a deficient number, since it is larger than the sum of its proper divisors (459090914).

642727246 is a wasteful number, since it uses less digits than its factorization.

642727246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45909098.

The product of its digits is 225792, while the sum is 40.

The square root of 642727246 is about 25352.0659118739. The cubic root of 642727246 is about 862.9962399811.

The spelling of 642727246 in words is "six hundred forty-two million, seven hundred twenty-seven thousand, two hundred forty-six".