1321412534 has 16 divisors (see below), whose sum is σ = 2186654400. Its totient is φ = 595007040.

The previous prime is 1321412467. The next prime is 1321412581. The reversal of 1321412534 is 4352141231.

It is a happy number.

It is a super-2 number, since 2×1321412534² = 3492262170024602312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618734 + ... + 620865.

It is an arithmetic number, because the mean of its divisors is an integer number (136665900).

Almost surely, 2^1321412534 is an apocalyptic number.

1321412534 is a deficient number, since it is larger than the sum of its proper divisors (865241866).

1321412534 is a wasteful number, since it uses less digits than its factorization.

1321412534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239655.

The product of its digits is 2880, while the sum is 26.

The square root of 1321412534 is about 36351.2384108162. The cubic root of 1321412534 is about 1097.3524576508.

Adding to 1321412534 its reverse (4352141231), we get a palindrome (5673553765).

The spelling of 1321412534 in words is "one billion, three hundred twenty-one million, four hundred twelve thousand, five hundred thirty-four".