12139061 has 16 divisors (see below), whose sum is σ = 13689600. Its totient is φ = 10670400.

The previous prime is 12139051. The next prime is 12139103. The reversal of 12139061 is 16093121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12139061 is a prime.

It is a super-3 number, since 3×12139061³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52895 + ... + 53123.

It is an arithmetic number, because the mean of its divisors is an integer number (855600).

Almost surely, 2^12139061 is an apocalyptic number.

12139061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12139061 is a deficient number, since it is larger than the sum of its proper divisors (1550539).

12139061 is a wasteful number, since it uses less digits than its factorization.

12139061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12139061 is about 3484.1155262132. The cubic root of 12139061 is about 229.8238159250.

The spelling of 12139061 in words is "twelve million, one hundred thirty-nine thousand, sixty-one".