1242884 has 6 divisors (see below), whose sum is σ = 2175054. Its totient is φ = 621440.

The previous prime is 1242869. The next prime is 1242889. The reversal of 1242884 is 4882421.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 222784 = 1010^2 + 472^2 .

It is not an unprimeable number, because it can be changed into a prime (1242889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155357 + ... + 155364.

It is an arithmetic number, because the mean of its divisors is an integer number (362509).

2^1242884 is an apocalyptic number.

It is an amenable number.

1242884 is a deficient number, since it is larger than the sum of its proper divisors (932170).

1242884 is a wasteful number, since it uses less digits than its factorization.

1242884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310725 (or 310723 counting only the distinct ones).

The product of its digits is 4096, while the sum is 29.

The square root of 1242884 is about 1114.8470747147. The cubic root of 1242884 is about 107.5169326131.

The spelling of 1242884 in words is "one million, two hundred forty-two thousand, eight hundred eighty-four".