1125504742427 has 16 divisors (see below), whose sum is σ = 1223936645568. Its totient is φ = 1028767789440.

The previous prime is 1125504742393. The next prime is 1125504742451. The reversal of 1125504742427 is 7242474055211.

It is a cyclic number.

It is not a de Polignac number, because 1125504742427 - 2⁶ = 1125504742363 is a prime.

It is a super-2 number, since 2×1125504742427² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1125504742487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30581777 + ... + 30618557.

It is an arithmetic number, because the mean of its divisors is an integer number (76496040348).

Almost surely, 2^{1125504742427} is an apocalyptic number.

1125504742427 is a deficient number, since it is larger than the sum of its proper divisors (98431903141).

1125504742427 is a wasteful number, since it uses less digits than its factorization.

1125504742427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59750.

The product of its (nonzero) digits is 627200, while the sum is 44.

Adding to 1125504742427 its reverse (7242474055211), we get a palindrome (8367978797638).

The spelling of 1125504742427 in words is "one trillion, one hundred twenty-five billion, five hundred four million, seven hundred forty-two thousand, four hundred twenty-seven".