1242130 has 8 divisors (see below), whose sum is σ = 2235852. Its totient is φ = 496848.

The previous prime is 1242121. The next prime is 1242151. The reversal of 1242130 is 312421.

It can be written as a sum of positive squares in 2 ways, for example, as 1212201 + 29929 = 1101^2 + 173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1242130.

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, 62097 + ... + 62116.

2^1242130 is an apocalyptic number.

1242130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242130 is a deficient number, since it is larger than the sum of its proper divisors (993722).

1242130 is a wasteful number, since it uses less digits than its factorization.

1242130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124220.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1242130 is about 1114.5088604403. The cubic root of 1242130 is about 107.4951863718.

Adding to 1242130 its reverse (312421), we get a palindrome (1554551).

The spelling of 1242130 in words is "one million, two hundred forty-two thousand, one hundred thirty".