12740157 has 12 divisors (see below), whose sum is σ = 19485180. Its totient is φ = 7993728.

The previous prime is 12740153. The next prime is 12740197. The reversal of 12740157 is 75104721.

12740157 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 1490841 = 3354^2 + 1221^2 .

It is not a de Polignac number, because 12740157 - 2² = 12740153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12740157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12740153) 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, 41482 + ... + 41787.

It is an arithmetic number, because the mean of its divisors is an integer number (1623765).

Almost surely, 2^12740157 is an apocalyptic number.

12740157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12740157 is a deficient number, since it is larger than the sum of its proper divisors (6745023).

12740157 is a wasteful number, since it uses less digits than its factorization.

12740157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83292 (or 83289 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 12740157 is about 3569.3356524709. The cubic root of 12740157 is about 233.5563036446.

Adding to 12740157 its reverse (75104721), we get a palindrome (87844878).

The spelling of 12740157 in words is "twelve million, seven hundred forty thousand, one hundred fifty-seven".