1021452687 has 12 divisors (see below), whose sum is σ = 1530077640. Its totient is φ = 680968296.

The previous prime is 1021452631. The next prime is 1021452689. The reversal of 1021452687 is 7862541201.

1021452687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021452687 - 2¹⁹ = 1020928399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021452689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2101512 + ... + 2101997.

It is an arithmetic number, because the mean of its divisors is an integer number (127506470).

Almost surely, 2^1021452687 is an apocalyptic number.

1021452687 is a deficient number, since it is larger than the sum of its proper divisors (508624953).

1021452687 is an frugal number, since it uses more digits than its factorization.

1021452687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203524 (or 4203512 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1021452687 is about 31960.1734507183. The cubic root of 1021452687 is about 1007.1003612154.

Adding to 1021452687 its reverse (7862541201), we get a palindrome (8883993888).

The spelling of 1021452687 in words is "one billion, twenty-one million, four hundred fifty-two thousand, six hundred eighty-seven".