1243114545 has 16 divisors (see below), whose sum is σ = 2105982720. Its totient is φ = 623994624.

The previous prime is 1243114541. The next prime is 1243114559. The reversal of 1243114545 is 5454113421.

It is not a de Polignac number, because 1243114545 - 2² = 1243114541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243114541) 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, 2437225 + ... + 2437734.

It is an arithmetic number, because the mean of its divisors is an integer number (131623920).

Almost surely, 2^1243114545 is an apocalyptic number.

1243114545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243114545 is a deficient number, since it is larger than the sum of its proper divisors (862868175).

1243114545 is a wasteful number, since it uses less digits than its factorization.

1243114545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874984.

The product of its digits is 9600, while the sum is 30.

The square root of 1243114545 is about 35257.8295560007. The cubic root of 1243114545 is about 1075.2358004459.

Adding to 1243114545 its reverse (5454113421), we get a palindrome (6697227966).

The spelling of 1243114545 in words is "one billion, two hundred forty-three million, one hundred fourteen thousand, five hundred forty-five".