15140121 has 16 divisors (see below), whose sum is σ = 20951040. Its totient is φ = 9714960.

The previous prime is 15140101. The next prime is 15140129. The reversal of 15140121 is 12104151.

It is a happy number.

It is not a de Polignac number, because 15140121 - 2¹³ = 15131929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15140121.

It is not an unprimeable number, because it can be changed into a prime (15140129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24150 + ... + 24768.

It is an arithmetic number, because the mean of its divisors is an integer number (1309440).

Almost surely, 2^15140121 is an apocalyptic number.

It is an amenable number.

15140121 is a deficient number, since it is larger than the sum of its proper divisors (5810919).

15140121 is a wasteful number, since it uses less digits than its factorization.

15140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 15140121 is about 3891.0308402787. The cubic root of 15140121 is about 247.3867577037.

Adding to 15140121 its reverse (12104151), we get a palindrome (27244272).

The spelling of 15140121 in words is "fifteen million, one hundred forty thousand, one hundred twenty-one".