1387124371 has 2 divisors, whose sum is σ = 1387124372. Its totient is φ = 1387124370.

The previous prime is 1387124327. The next prime is 1387124437. The reversal of 1387124371 is 1734217831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1387124371 - 2²⁷ = 1252906643 is a prime.

It is a super-2 number, since 2×1387124371² = 3848228041244291282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1387124371.

It is not a weakly prime, because it can be changed into another prime (1387124311) by changing a digit.

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 as a sum of consecutive naturals, namely, 693562185 + 693562186.

It is an arithmetic number, because the mean of its divisors is an integer number (693562186).

Almost surely, 2^1387124371 is an apocalyptic number.

1387124371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387124371 is an equidigital number, since it uses as much as digits as its factorization.

1387124371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 1387124371 is about 37244.1186095201. The cubic root of 1387124371 is about 1115.2488926703.

The spelling of 1387124371 in words is "one billion, three hundred eighty-seven million, one hundred twenty-four thousand, three hundred seventy-one".