1125642046 has 32 divisors (see below), whose sum is σ = 1878893280. Its totient is φ = 503387136.

The previous prime is 1125642041. The next prime is 1125642059. The reversal of 1125642046 is 6402465211.

It is a happy number.

It is a super-2 number, since 2×1125642046² = 2534140031446132232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1125641999 and 1125642017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125642041) 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, 43690 + ... + 64498.

It is an arithmetic number, because the mean of its divisors is an integer number (58715415).

Almost surely, 2^1125642046 is an apocalyptic number.

1125642046 is a deficient number, since it is larger than the sum of its proper divisors (753251234).

1125642046 is a wasteful number, since it uses less digits than its factorization.

1125642046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20908.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1125642046 is about 33550.5893539890. The cubic root of 1125642046 is about 1040.2397271581.

The spelling of 1125642046 in words is "one billion, one hundred twenty-five million, six hundred forty-two thousand, forty-six".