1020434687 has 8 divisors (see below), whose sum is σ = 1055980800. Its totient is φ = 984912544.

The previous prime is 1020434683. The next prime is 1020434717. The reversal of 1020434687 is 7864340201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020434687 - 2² = 1020434683 is a prime.

It is a super-4 number, since 4×1020434687⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020434683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148514 + ... + 155232.

It is an arithmetic number, because the mean of its divisors is an integer number (131997600).

Almost surely, 2^1020434687 is an apocalyptic number.

1020434687 is a deficient number, since it is larger than the sum of its proper divisors (35546113).

1020434687 is an equidigital number, since it uses as much as digits as its factorization.

1020434687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11985.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1020434687 is about 31944.2434094157. The cubic root of 1020434687 is about 1006.7656846131.

Adding to 1020434687 its reverse (7864340201), we get a palindrome (8884774888).

The spelling of 1020434687 in words is "one billion, twenty million, four hundred thirty-four thousand, six hundred eighty-seven".