1256042324 has 6 divisors (see below), whose sum is σ = 2198074074. Its totient is φ = 628021160.

The previous prime is 1256042323. The next prime is 1256042357. The reversal of 1256042324 is 4232406521.

It can be written as a sum of positive squares in only one way, i.e., 1168956100 + 87086224 = 34190^2 + 9332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256042323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157005287 + ... + 157005294.

It is an arithmetic number, because the mean of its divisors is an integer number (366345679).

Almost surely, 2^1256042324 is an apocalyptic number.

It is an amenable number.

1256042324 is a deficient number, since it is larger than the sum of its proper divisors (942031750).

1256042324 is a wasteful number, since it uses less digits than its factorization.

1256042324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314010585 (or 314010583 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1256042324 is about 35440.6874086833. The cubic root of 1256042324 is about 1078.9502614413.

Adding to 1256042324 its reverse (4232406521), we get a palindrome (5488448845).

The spelling of 1256042324 in words is "one billion, two hundred fifty-six million, forty-two thousand, three hundred twenty-four".