10109142 has 24 divisors (see below), whose sum is σ = 21968544. Its totient is φ = 3359664.

The previous prime is 10109137. The next prime is 10109153. The reversal of 10109142 is 24190101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7728 + ... + 8940.

It is an arithmetic number, because the mean of its divisors is an integer number (915356).

Almost surely, 2^10109142 is an apocalyptic number.

10109142 is an abundant number, since it is smaller than the sum of its proper divisors (11859402).

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

10109142 is a wasteful number, since it uses less digits than its factorization.

10109142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 10109142 is about 3179.4876945823. The cubic root of 10109142 is about 216.2244323632.

Adding to 10109142 its reverse (24190101), we get a palindrome (34299243).

The spelling of 10109142 in words is "ten million, one hundred nine thousand, one hundred forty-two".