10542639 has 8 divisors (see below), whose sum is σ = 14202160. Its totient is φ = 6955776.

The previous prime is 10542613. The next prime is 10542641. The reversal of 10542639 is 93624501.

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

It is not a de Polignac number, because 10542639 - 2⁵ = 10542607 is a prime.

It is a super-2 number, since 2×10542639² = 222294474168642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10542659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17824 + ... + 18405.

It is an arithmetic number, because the mean of its divisors is an integer number (1775270).

Almost surely, 2^10542639 is an apocalyptic number.

10542639 is a deficient number, since it is larger than the sum of its proper divisors (3659521).

10542639 is an equidigital number, since it uses as much as digits as its factorization.

10542639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36329.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 10542639 is about 3246.9430238303. The cubic root of 10542639 is about 219.2719666972.

The spelling of 10542639 in words is "ten million, five hundred forty-two thousand, six hundred thirty-nine".