1587587242 has 4 divisors (see below), whose sum is σ = 2381380866. Its totient is φ = 793793620.

The previous prime is 1587587233. The next prime is 1587587257. The reversal of 1587587242 is 2427857851.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1587305281 + 281961 = 39841^2 + 531^2 .

It is a super-3 number, since 3×1587587242³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396896809 + ... + 396896812.

Almost surely, 2^1587587242 is an apocalyptic number.

1587587242 is a deficient number, since it is larger than the sum of its proper divisors (793793624).

1587587242 is an equidigital number, since it uses as much as digits as its factorization.

1587587242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793793623.

The product of its digits is 1254400, while the sum is 49.

The square root of 1587587242 is about 39844.5384212190. The cubic root of 1587587242 is about 1166.5746461117.

The spelling of 1587587242 in words is "one billion, five hundred eighty-seven million, five hundred eighty-seven thousand, two hundred forty-two".