13542140 has 12 divisors (see below), whose sum is σ = 28438536. Its totient is φ = 5416848.

The previous prime is 13542097. The next prime is 13542143. The reversal of 13542140 is 4124531.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 677107 = 13542140 / (1 + 3 + 5 + 4 + 2 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542143) 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, 338534 + ... + 338573.

It is an arithmetic number, because the mean of its divisors is an integer number (2369878).

Almost surely, 2^13542140 is an apocalyptic number.

13542140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13542140 is an abundant number, since it is smaller than the sum of its proper divisors (14896396).

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

13542140 is a wasteful number, since it uses less digits than its factorization.

13542140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677116 (or 677114 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13542140 is about 3679.9646737435. The cubic root of 13542140 is about 238.3576526061.

Adding to 13542140 its reverse (4124531), we get a palindrome (17666671).

The spelling of 13542140 in words is "thirteen million, five hundred forty-two thousand, one hundred forty".