1242600 has 96 divisors (see below), whose sum is σ = 4092000. Its totient is φ = 311040.

The previous prime is 1242569. The next prime is 1242601. The reversal of 1242600 is 62421.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1242600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11346 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (42625).

2^1242600 is an apocalyptic number.

1242600 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 1242600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046000).

1242600 is an abundant number, since it is smaller than the sum of its proper divisors (2849400).

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

1242600 is a wasteful number, since it uses less digits than its factorization.

1242600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1242600 is about 1114.7196957083. The cubic root of 1242600 is about 107.5087427539.

The spelling of 1242600 in words is "one million, two hundred forty-two thousand, six hundred".