20103142 has 8 divisors (see below), whose sum is σ = 30493800. Its totient is φ = 9938544.

The previous prime is 20103137. The next prime is 20103143. The reversal of 20103142 is 24130102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56292 + ... + 56647.

It is an arithmetic number, because the mean of its divisors is an integer number (3811725).

Almost surely, 2^20103142 is an apocalyptic number.

20103142 is a deficient number, since it is larger than the sum of its proper divisors (10390658).

20103142 is a wasteful number, since it uses less digits than its factorization.

20103142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113030.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20103142 is about 4483.6527519423. The cubic root of 20103142 is about 271.9075792552.

Adding to 20103142 its reverse (24130102), we get a palindrome (44233244).

The spelling of 20103142 in words is "twenty million, one hundred three thousand, one hundred forty-two".