1125742738 has 4 divisors (see below), whose sum is σ = 1688614110. Its totient is φ = 562871368.

The previous prime is 1125742729. The next prime is 1125742741. The reversal of 1125742738 is 8372475211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8372475211 = 39199 ⋅213589.

It can be written as a sum of positive squares in only one way, i.e., 793154569 + 332588169 = 28163^2 + 18237^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1125742738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281435683 + ... + 281435686.

Almost surely, 2^1125742738 is an apocalyptic number.

1125742738 is a deficient number, since it is larger than the sum of its proper divisors (562871372).

1125742738 is an equidigital number, since it uses as much as digits as its factorization.

1125742738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562871371.

The product of its digits is 94080, while the sum is 40.

The square root of 1125742738 is about 33552.0899200035. The cubic root of 1125742738 is about 1040.2707437369.

The spelling of 1125742738 in words is "one billion, one hundred twenty-five million, seven hundred forty-two thousand, seven hundred thirty-eight".