1380742247 has 8 divisors (see below), whose sum is σ = 1389284352. Its totient is φ = 1372214200.

The previous prime is 1380742243. The next prime is 1380742271. The reversal of 1380742247 is 7422470831.

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

It is a cyclic number.

It is not a de Polignac number, because 1380742247 - 2² = 1380742243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380742247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380742241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246872 + ... + 252402.

It is an arithmetic number, because the mean of its divisors is an integer number (173660544).

Almost surely, 2^1380742247 is an apocalyptic number.

1380742247 is a deficient number, since it is larger than the sum of its proper divisors (8542105).

1380742247 is a wasteful number, since it uses less digits than its factorization.

1380742247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 1380742247 is about 37158.3402078188. The cubic root of 1380742247 is about 1113.5358521494.

The spelling of 1380742247 in words is "one billion, three hundred eighty million, seven hundred forty-two thousand, two hundred forty-seven".