1321452642 has 32 divisors (see below), whose sum is σ = 2669635584. Its totient is φ = 436050000.

The previous prime is 1321452607. The next prime is 1321452647. The reversal of 1321452642 is 2462541231.

It is not an unprimeable number, because it can be changed into a prime (1321452647) 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, 275767 + ... + 280517.

It is an arithmetic number, because the mean of its divisors is an integer number (83426112).

Almost surely, 2^1321452642 is an apocalyptic number.

1321452642 is an abundant number, since it is smaller than the sum of its proper divisors (1348182942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321452642 is a wasteful number, since it uses less digits than its factorization.

1321452642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214.

The product of its digits is 11520, while the sum is 30.

The square root of 1321452642 is about 36351.7900797196. The cubic root of 1321452642 is about 1097.3635599538.

Adding to 1321452642 its reverse (2462541231), we get a palindrome (3783993873).

It can be divided in two parts, 13214 and 52642, that added together give a palindrome (65856).

The spelling of 1321452642 in words is "one billion, three hundred twenty-one million, four hundred fifty-two thousand, six hundred forty-two".