1204521145 has 8 divisors (see below), whose sum is σ = 1530450504. Its totient is φ = 906933504.

The previous prime is 1204521103. The next prime is 1204521161. The reversal of 1204521145 is 5411254021.

1204521145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 257666704 + 946854441 = 16052^2 + 30771^2 .

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 1204521145 - 2⁹ = 1204520633 is a prime.

It is a super-2 number, since 2×1204521145² = 2901742377504222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7085334 + ... + 7085503.

It is an arithmetic number, because the mean of its divisors is an integer number (191306313).

Almost surely, 2^1204521145 is an apocalyptic number.

It is an amenable number.

1204521145 is a deficient number, since it is larger than the sum of its proper divisors (325929359).

1204521145 is a wasteful number, since it uses less digits than its factorization.

1204521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14170859.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1204521145 is about 34706.2119079568. The cubic root of 1204521145 is about 1063.9914614919.

Adding to 1204521145 its reverse (5411254021), we get a palindrome (6615775166).

The spelling of 1204521145 in words is "one billion, two hundred four million, five hundred twenty-one thousand, one hundred forty-five".