1343640242 has 8 divisors (see below), whose sum is σ = 2303383296. Its totient is φ = 575845812.

The previous prime is 1343640211. The next prime is 1343640247. The reversal of 1343640242 is 2420463431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1343640247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47987138 + ... + 47987165.

It is an arithmetic number, because the mean of its divisors is an integer number (287922912).

Almost surely, 2^1343640242 is an apocalyptic number.

1343640242 is a deficient number, since it is larger than the sum of its proper divisors (959743054).

1343640242 is an equidigital number, since it uses as much as digits as its factorization.

1343640242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95974312.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 1343640242 is about 36655.6986292718. The cubic root of 1343640242 is about 1103.4711949952.

The spelling of 1343640242 in words is "one billion, three hundred forty-three million, six hundred forty thousand, two hundred forty-two".