10142643 has 16 divisors (see below), whose sum is σ = 15515136. Its totient is φ = 5773440.

The previous prime is 10142641. The next prime is 10142651. The reversal of 10142643 is 34624101.

It is not a de Polignac number, because 10142643 - 2¹ = 10142641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10142641) 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 15 ways as a sum of consecutive naturals, for example, 5755 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (969696).

Almost surely, 2^10142643 is an apocalyptic number.

10142643 is a deficient number, since it is larger than the sum of its proper divisors (5372493).

10142643 is a wasteful number, since it uses less digits than its factorization.

10142643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 10142643 is about 3184.7516386682. The cubic root of 10142643 is about 216.4630199592.

Adding to 10142643 its reverse (34624101), we get a palindrome (44766744).

The spelling of 10142643 in words is "ten million, one hundred forty-two thousand, six hundred forty-three".