1242887 has 8 divisors (see below), whose sum is σ = 1329696. Its totient is φ = 1157632.

The previous prime is 1242869. The next prime is 1242889. The reversal of 1242887 is 7882421.

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

It is not a de Polignac number, because 1242887 - 2⁶ = 1242823 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1598 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (166212).

2^1242887 is an apocalyptic number.

1242887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1242887 is a deficient number, since it is larger than the sum of its proper divisors (86809).

1242887 is a wasteful number, since it uses less digits than its factorization.

1242887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 7168, while the sum is 32.

The square root of 1242887 is about 1114.8484201899. The cubic root of 1242887 is about 107.5170191190.

The spelling of 1242887 in words is "one million, two hundred forty-two thousand, eight hundred eighty-seven".