12150705 has 32 divisors (see below), whose sum is σ = 22466304. Its totient is φ = 5492736.

The previous prime is 12150683. The next prime is 12150707. The reversal of 12150705 is 50705121.

It is not a de Polignac number, because 12150705 - 2⁵ = 12150673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12150707) 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, 9589 + ... + 10781.

It is an arithmetic number, because the mean of its divisors is an integer number (702072).

Almost surely, 2^12150705 is an apocalyptic number.

12150705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12150705 is a deficient number, since it is larger than the sum of its proper divisors (10315599).

12150705 is a wasteful number, since it uses less digits than its factorization.

12150705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 12150705 is about 3485.7861380182. The cubic root of 12150705 is about 229.8972761189.

Adding to 12150705 its reverse (50705121), we get a palindrome (62855826).

The spelling of 12150705 in words is "twelve million, one hundred fifty thousand, seven hundred five".