1047420587 has 4 divisors (see below), whose sum is σ = 1055416296. Its totient is φ = 1039424880.

The previous prime is 1047420551. The next prime is 1047420593. The reversal of 1047420587 is 7850247401.

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

It is a cyclic number.

It is not a de Polignac number, because 1047420587 - 2⁶ = 1047420523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1047420587.

It is not an unprimeable number, because it can be changed into a prime (1047420887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997658 + ... + 3997919.

It is an arithmetic number, because the mean of its divisors is an integer number (263854074).

Almost surely, 2^1047420587 is an apocalyptic number.

1047420587 is a deficient number, since it is larger than the sum of its proper divisors (7995709).

1047420587 is an equidigital number, since it uses as much as digits as its factorization.

1047420587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7995708.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 1047420587 is about 32363.8778115355. The cubic root of 1047420587 is about 1015.5633867437.

Adding to 1047420587 its reverse (7850247401), we get a palindrome (8897667988).

The spelling of 1047420587 in words is "one billion, forty-seven million, four hundred twenty thousand, five hundred eighty-seven".