1243254074 has 4 divisors (see below), whose sum is σ = 1864881114. Its totient is φ = 621627036.

The previous prime is 1243254073. The next prime is 1243254097. The reversal of 1243254074 is 4704523421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1243056049 + 198025 = 35257^2 + 445^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1243254074.

It is not an unprimeable number, because it can be changed into a prime (1243254073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310813517 + ... + 310813520.

Almost surely, 2^1243254074 is an apocalyptic number.

1243254074 is a deficient number, since it is larger than the sum of its proper divisors (621627040).

1243254074 is an equidigital number, since it uses as much as digits as its factorization.

1243254074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621627039.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 1243254074 is about 35259.8081957347. The cubic root of 1243254074 is about 1075.2760276220.

Adding to 1243254074 its reverse (4704523421), we get a palindrome (5947777495).

The spelling of 1243254074 in words is "one billion, two hundred forty-three million, two hundred fifty-four thousand, seventy-four".