1024621245 has 20 divisors (see below), whose sum is σ = 1836729180. Its totient is φ = 546464448.

The previous prime is 1024621223. The next prime is 1024621249. The reversal of 1024621245 is 5421264201.

1024621245 is a `hidden beast` number, since 10 + 2 + 4 + 621 + 24 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 546717924 + 477903321 = 23382^2 + 21861^2 .

It is not a de Polignac number, because 1024621245 - 2¹³ = 1024613053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024621249) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1264560 + ... + 1265369.

It is an arithmetic number, because the mean of its divisors is an integer number (91836459).

Almost surely, 2^1024621245 is an apocalyptic number.

1024621245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1024621245 is a deficient number, since it is larger than the sum of its proper divisors (812107935).

1024621245 is an equidigital number, since it uses as much as digits as its factorization.

1024621245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529946 (or 2529937 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1024621245 is about 32009.7054813068. The cubic root of 1024621245 is about 1008.1406319518.

Adding to 1024621245 its reverse (5421264201), we get a palindrome (6445885446).

The spelling of 1024621245 in words is "one billion, twenty-four million, six hundred twenty-one thousand, two hundred forty-five".