1242087 has 32 divisors (see below), whose sum is σ = 2181120. Its totient is φ = 609120.

The previous prime is 1242067. The next prime is 1242089. The reversal of 1242087 is 7802421.

It is not a de Polignac number, because 1242087 - 2¹¹ = 1240039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4248 + ... + 4530.

It is an arithmetic number, because the mean of its divisors is an integer number (68160).

2^1242087 is an apocalyptic number.

1242087 is a deficient number, since it is larger than the sum of its proper divisors (939033).

1242087 is a wasteful number, since it uses less digits than its factorization.

1242087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1242087 is about 1114.4895692648. The cubic root of 1242087 is about 107.4939459363.

It can be divided in two parts, 124 and 2087, that added together give a triangular number (2211 = T₆₆).

The spelling of 1242087 in words is "one million, two hundred forty-two thousand, eighty-seven".