10139142 has 32 divisors (see below), whose sum is σ = 22353408. Its totient is φ = 3046176.

The previous prime is 10139093. The next prime is 10139149. The reversal of 10139142 is 24193101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10139149) 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 15 ways as a sum of consecutive naturals, for example, 1843 + ... + 4865.

It is an arithmetic number, because the mean of its divisors is an integer number (698544).

Almost surely, 2^10139142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10139142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11176704).

10139142 is an abundant number, since it is smaller than the sum of its proper divisors (12214266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10139142 is a wasteful number, since it uses less digits than its factorization.

10139142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 10139142 is about 3184.2019408323. The cubic root of 10139142 is about 216.4381111247.

The spelling of 10139142 in words is "ten million, one hundred thirty-nine thousand, one hundred forty-two".