1321842742 has 16 divisors (see below), whose sum is σ = 2175973632. Its totient is φ = 597238120.

The previous prime is 1321842727. The next prime is 1321842751. The reversal of 1321842742 is 2472481231.

It is a junction number, because it is equal to n+sod(n) for n = 1321842698 and 1321842707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176218 + ... + 183565.

It is an arithmetic number, because the mean of its divisors is an integer number (135998352).

Almost surely, 2^1321842742 is an apocalyptic number.

1321842742 is a deficient number, since it is larger than the sum of its proper divisors (854130890).

1321842742 is a wasteful number, since it uses less digits than its factorization.

1321842742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359963.

The product of its digits is 21504, while the sum is 34.

The square root of 1321842742 is about 36357.1553067618. The cubic root of 1321842742 is about 1097.4715318916.

The spelling of 1321842742 in words is "one billion, three hundred twenty-one million, eight hundred forty-two thousand, seven hundred forty-two".