1242860 has 12 divisors (see below), whose sum is σ = 2610048. Its totient is φ = 497136.

The previous prime is 1242859. The next prime is 1242869. The reversal of 1242860 is 682421.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1242869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31052 + ... + 31091.

It is an arithmetic number, because the mean of its divisors is an integer number (217504).

2^1242860 is an apocalyptic number.

1242860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242860 is an abundant number, since it is smaller than the sum of its proper divisors (1367188).

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

1242860 is a wasteful number, since it uses less digits than its factorization.

1242860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62152 (or 62150 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1242860 is about 1114.8363108546. The cubic root of 1242860 is about 107.5162405606.

The spelling of 1242860 in words is "one million, two hundred forty-two thousand, eight hundred sixty".