1021713245 has 48 divisors (see below), whose sum is σ = 1479031680. Its totient is φ = 663645312.

The previous prime is 1021713229. The next prime is 1021713247. The reversal of 1021713245 is 5423171201.

It is not a de Polignac number, because 1021713245 - 2⁴ = 1021713229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021713247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2573387 + ... + 2573783.

It is an arithmetic number, because the mean of its divisors is an integer number (30813160).

Almost surely, 2^1021713245 is an apocalyptic number.

It is an amenable number.

1021713245 is a deficient number, since it is larger than the sum of its proper divisors (457318435).

1021713245 is a wasteful number, since it uses less digits than its factorization.

1021713245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1021713245 is about 31964.2494828206. The cubic root of 1021713245 is about 1007.1859862441.

Adding to 1021713245 its reverse (5423171201), we get a palindrome (6444884446).

The spelling of 1021713245 in words is "one billion, twenty-one million, seven hundred thirteen thousand, two hundred forty-five".