1154546842 has 4 divisors (see below), whose sum is σ = 1731820266. Its totient is φ = 577273420.

The previous prime is 1154546807. The next prime is 1154546917. The reversal of 1154546842 is 2486454511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2486454511 = 137 ⋅18149303.

It can be written as a sum of positive squares in only one way, i.e., 737611281 + 416935561 = 27159^2 + 20419^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1154546795 and 1154546804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288636709 + ... + 288636712.

Almost surely, 2^1154546842 is an apocalyptic number.

1154546842 is a deficient number, since it is larger than the sum of its proper divisors (577273424).

1154546842 is an equidigital number, since it uses as much as digits as its factorization.

1154546842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577273423.

The product of its digits is 153600, while the sum is 40.

The square root of 1154546842 is about 33978.6233093691. The cubic root of 1154546842 is about 1049.0685138803.

The spelling of 1154546842 in words is "one billion, one hundred fifty-four million, five hundred forty-six thousand, eight hundred forty-two".