1242164 has 48 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 466560.

The previous prime is 1242151. The next prime is 1242167. The reversal of 1242164 is 4612421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11342 + ... + 11450.

It is an arithmetic number, because the mean of its divisors is an integer number (58520).

2^1242164 is an apocalyptic number.

1242164 is a gapful number since it is divisible by the number (14) 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 1242164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404480).

1242164 is an abundant number, since it is smaller than the sum of its proper divisors (1566796).

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

1242164 is a wasteful number, since it uses less digits than its factorization.

1242164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 166 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 1242164 is about 1114.5241136916. The cubic root of 1242164 is about 107.4961671610.

Adding to 1242164 its reverse (4612421), we get a palindrome (5854585).

The spelling of 1242164 in words is "one million, two hundred forty-two thousand, one hundred sixty-four".