1233542545 has 16 divisors (see below), whose sum is σ = 1542302208. Its totient is φ = 946062720.

The previous prime is 1233542543. The next prime is 1233542587. The reversal of 1233542545 is 5452453321.

It is not a de Polignac number, because 1233542545 - 2¹ = 1233542543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233542545.

It is not an unprimeable number, because it can be changed into a prime (1233542543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20604 + ... + 53773.

It is an arithmetic number, because the mean of its divisors is an integer number (96393888).

Almost surely, 2^1233542545 is an apocalyptic number.

It is an amenable number.

1233542545 is a deficient number, since it is larger than the sum of its proper divisors (308759663).

1233542545 is a wasteful number, since it uses less digits than its factorization.

1233542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74520.

The product of its digits is 72000, while the sum is 34.

The square root of 1233542545 is about 35121.8243404297. The cubic root of 1233542545 is about 1072.4689094683.

Adding to 1233542545 its reverse (5452453321), we get a palindrome (6685995866).

The spelling of 1233542545 in words is "one billion, two hundred thirty-three million, five hundred forty-two thousand, five hundred forty-five".