12740091 has 32 divisors (see below), whose sum is σ = 21826560. Its totient is φ = 6424704.

The previous prime is 12740081. The next prime is 12740107. The reversal of 12740091 is 19004721.

12740091 = T₄₈₃ + T₄₈₄ + ... + T₅₇₃.

It is not a de Polignac number, because 12740091 - 2⁵ = 12740059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12740081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5265 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (682080).

Almost surely, 2^12740091 is an apocalyptic number.

12740091 is a deficient number, since it is larger than the sum of its proper divisors (9086469).

12740091 is a wasteful number, since it uses less digits than its factorization.

12740091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12740091 is about 3569.3264070410. The cubic root of 12740091 is about 233.5559003335. Note that the first 3 decimals are identical.

The spelling of 12740091 in words is "twelve million, seven hundred forty thousand, ninety-one".