1021230545 has 8 divisors (see below), whose sum is σ = 1297563624. Its totient is φ = 768926464.

The previous prime is 1021230541. The next prime is 1021230547. The reversal of 1021230545 is 5450321201.

It can be written as a sum of positive squares in 4 ways, for example, as 187580416 + 833650129 = 13696^2 + 28873^2 .

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 1021230545 - 2² = 1021230541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021230545.

It is not an unprimeable number, because it can be changed into a prime (1021230541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6007154 + ... + 6007323.

It is an arithmetic number, because the mean of its divisors is an integer number (162195453).

Almost surely, 2^1021230545 is an apocalyptic number.

It is an amenable number.

1021230545 is a deficient number, since it is larger than the sum of its proper divisors (276333079).

1021230545 is a wasteful number, since it uses less digits than its factorization.

1021230545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12014499.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1021230545 is about 31956.6979677188. The cubic root of 1021230545 is about 1007.0273490204.

Adding to 1021230545 its reverse (5450321201), we get a palindrome (6471551746).

The spelling of 1021230545 in words is "one billion, twenty-one million, two hundred thirty thousand, five hundred forty-five".