1243053245 has 64 divisors (see below), whose sum is σ = 1900800000. Its totient is φ = 761031936.

The previous prime is 1243053233. The next prime is 1243053257. The reversal of 1243053245 is 5423503421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1243053233) and next prime (1243053257).

It is not a de Polignac number, because 1243053245 - 2¹² = 1243049149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 828506 + ... + 830004.

It is an arithmetic number, because the mean of its divisors is an integer number (29700000).

Almost surely, 2^1243053245 is an apocalyptic number.

It is an amenable number.

1243053245 is a deficient number, since it is larger than the sum of its proper divisors (657746755).

1243053245 is a wasteful number, since it uses less digits than its factorization.

1243053245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1243053245 is about 35256.9602348246. The cubic root of 1243053245 is about 1075.2181262800.

Adding to 1243053245 its reverse (5423503421), we get a palindrome (6666556666).

The spelling of 1243053245 in words is "one billion, two hundred forty-three million, fifty-three thousand, two hundred forty-five".