12242140 has 12 divisors (see below), whose sum is σ = 25708536. Its totient is φ = 4896848.

The previous prime is 12242123. The next prime is 12242161. The reversal of 12242140 is 4124221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306034 + ... + 306073.

It is an arithmetic number, because the mean of its divisors is an integer number (2142378).

Almost surely, 2^12242140 is an apocalyptic number.

12242140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12242140 is an abundant number, since it is smaller than the sum of its proper divisors (13466396).

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

12242140 is a wasteful number, since it uses less digits than its factorization.

12242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612116 (or 612114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12242140 is about 3498.8769626839. The cubic root of 12242140 is about 230.4725006131.

Adding to 12242140 its reverse (4124221), we get a palindrome (16366361).

It can be divided in two parts, 1224 and 2140, that added together give a square (3364 = 58²).

The spelling of 12242140 in words is "twelve million, two hundred forty-two thousand, one hundred forty".