1372740247 has 2 divisors, whose sum is σ = 1372740248. Its totient is φ = 1372740246.

The previous prime is 1372740221. The next prime is 1372740277. The reversal of 1372740247 is 7420472731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1372740247 - 2¹⁹ = 1372215959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372740277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686370123 + 686370124.

It is an arithmetic number, because the mean of its divisors is an integer number (686370124).

Almost surely, 2^1372740247 is an apocalyptic number.

1372740247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372740247 is an equidigital number, since it uses as much as digits as its factorization.

1372740247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 1372740247 is about 37050.5094027059. The cubic root of 1372740247 is about 1111.3805420917.

The spelling of 1372740247 in words is "one billion, three hundred seventy-two million, seven hundred forty thousand, two hundred forty-seven".