19140102 has 24 divisors (see below), whose sum is σ = 42254784. Its totient is φ = 6259344.

The previous prime is 19140097. The next prime is 19140103. The reversal of 19140102 is 20104191.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9078 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (1760616).

Almost surely, 2^19140102 is an apocalyptic number.

19140102 is an abundant number, since it is smaller than the sum of its proper divisors (23114682).

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

19140102 is a wasteful number, since it uses less digits than its factorization.

19140102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20124 (or 20121 counting only the distinct ones).

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

The square root of 19140102 is about 4374.9402281631. The cubic root of 19140102 is about 267.4944337503.

Adding to 19140102 its reverse (20104191), we get a palindrome (39244293).

The spelling of 19140102 in words is "nineteen million, one hundred forty thousand, one hundred two".