1125440387 has 2 divisors, whose sum is σ = 1125440388. Its totient is φ = 1125440386.

The previous prime is 1125440377. The next prime is 1125440441. The reversal of 1125440387 is 7830445211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125440387 - 2⁸ = 1125440131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125440377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562720193 + 562720194.

It is an arithmetic number, because the mean of its divisors is an integer number (562720194).

Almost surely, 2^1125440387 is an apocalyptic number.

1125440387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125440387 is an equidigital number, since it uses as much as digits as its factorization.

1125440387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1125440387 is about 33547.5839219459. The cubic root of 1125440387 is about 1040.1776037290.

Adding to 1125440387 its reverse (7830445211), we get a palindrome (8955885598).

The spelling of 1125440387 in words is "one billion, one hundred twenty-five million, four hundred forty thousand, three hundred eighty-seven".