12139374 has 32 divisors (see below), whose sum is σ = 26417664. Its totient is φ = 3696480.

The previous prime is 12139349. The next prime is 12139381. The reversal of 12139374 is 47393121.

It is a super-2 number, since 2×12139374² = 294728802223752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7279 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 2^12139374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12139374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13208832).

12139374 is an abundant number, since it is smaller than the sum of its proper divisors (14278290).

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

12139374 is a wasteful number, since it uses less digits than its factorization.

12139374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 4536, while the sum is 30.

The square root of 12139374 is about 3484.1604440668. The cubic root of 12139374 is about 229.8257912078.

The spelling of 12139374 in words is "twelve million, one hundred thirty-nine thousand, three hundred seventy-four".