1201324545 has 24 divisors (see below), whose sum is σ = 2116436712. Its totient is φ = 630201600.

The previous prime is 1201324543. The next prime is 1201324549. The reversal of 1201324545 is 5454231021.

1201324545 is a `hidden beast` number, since 1 + 201 + 3 + 2 + 454 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10246401 + 1191078144 = 3201^2 + 34512^2 .

It is not a de Polignac number, because 1201324545 - 2¹ = 1201324543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201324543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216076 + ... + 221565.

It is an arithmetic number, because the mean of its divisors is an integer number (88184863).

Almost surely, 2^1201324545 is an apocalyptic number.

1201324545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201324545 is a deficient number, since it is larger than the sum of its proper divisors (915112167).

1201324545 is a wasteful number, since it uses less digits than its factorization.

1201324545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437713 (or 437710 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1201324545 is about 34660.1290389981. The cubic root of 1201324545 is about 1063.0494084985.

Adding to 1201324545 its reverse (5454231021), we get a palindrome (6655555566).

The spelling of 1201324545 in words is "one billion, two hundred one million, three hundred twenty-four thousand, five hundred forty-five".