14121540 has 120 divisors (see below), whose sum is σ = 46347840. Its totient is φ = 3592512.

The previous prime is 14121533. The next prime is 14121553. The reversal of 14121540 is 4512141.

14121540 is a `hidden beast` number, since 1 + 4 + 121 + 540 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37071 + ... + 37449.

It is an arithmetic number, because the mean of its divisors is an integer number (386232).

Almost surely, 2^14121540 is an apocalyptic number.

14121540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14121540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23173920).

14121540 is an abundant number, since it is smaller than the sum of its proper divisors (32226300).

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

14121540 is a wasteful number, since it uses less digits than its factorization.

14121540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 14121540 is about 3757.8637548480. The cubic root of 14121540 is about 241.7096670742.

Adding to 14121540 its reverse (4512141), we get a palindrome (18633681).

The spelling of 14121540 in words is "fourteen million, one hundred twenty-one thousand, five hundred forty".