1587642 has 32 divisors (see below), whose sum is σ = 3674112. Its totient is φ = 447984.

The previous prime is 1587637. The next prime is 1587653. The reversal of 1587642 is 2467851.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4143 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (114816).

2^1587642 is an apocalyptic number.

1587642 is an abundant number, since it is smaller than the sum of its proper divisors (2086470).

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

1587642 is a wasteful number, since it uses less digits than its factorization.

1587642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 13440, while the sum is 33.

The square root of 1587642 is about 1260.0166665564. The cubic root of 1587642 is about 116.6588058196.

It can be divided in two parts, 158764 and 2, that added together give a triangular number (158766 = T₅₆₃).

The spelling of 1587642 in words is "one million, five hundred eighty-seven thousand, six hundred forty-two".