10642739 has 8 divisors (see below), whose sum is σ = 11279520. Its totient is φ = 10024000.

The previous prime is 10642691. The next prime is 10642747. The reversal of 10642739 is 93724601.

10642739 = 73² + 74² + ... + 318².

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 10642739 - 2⁸ = 10642483 is a prime.

It is a super-2 number, since 2×10642739² = 226535786844242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10642789) 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 in 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (1409940).

Almost surely, 2^10642739 is an apocalyptic number.

10642739 is a deficient number, since it is larger than the sum of its proper divisors (636781).

10642739 is an equidigital number, since it uses as much as digits as its factorization.

10642739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 10642739 is about 3262.3211062064. The cubic root of 10642739 is about 219.9637612487.

The spelling of 10642739 in words is "ten million, six hundred forty-two thousand, seven hundred thirty-nine".