12142620 has 144 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 2648448.

The previous prime is 12142609. The next prime is 12142621. The reversal of 12142620 is 2624121.

12142620 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12142593 and 12142602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28771 + ... + 29189.

It is an arithmetic number, because the mean of its divisors is an integer number (305760).

Almost surely, 2^12142620 is an apocalyptic number.

12142620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12142620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22014720).

12142620 is an abundant number, since it is smaller than the sum of its proper divisors (31886820).

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

12142620 is a wasteful number, since it uses less digits than its factorization.

12142620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12142620 is about 3484.6262353372. The cubic root of 12142620 is about 229.8462740882.

Adding to 12142620 its reverse (2624121), we get a palindrome (14766741).

The spelling of 12142620 in words is "twelve million, one hundred forty-two thousand, six hundred twenty".