1154847842 has 16 divisors (see below), whose sum is σ = 1835379000. Its totient is φ = 543099648.

The previous prime is 1154847829. The next prime is 1154847847. The reversal of 1154847842 is 2487484511.

It can be written as a sum of positive squares in 4 ways, for example, as 492351721 + 662496121 = 22189^2 + 25739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1154847793 and 1154847802.

It is not an unprimeable number, because it can be changed into a prime (1154847847) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 45284 + ... + 66032.

Almost surely, 2^1154847842 is an apocalyptic number.

1154847842 is a deficient number, since it is larger than the sum of its proper divisors (680531158).

1154847842 is a wasteful number, since it uses less digits than its factorization.

1154847842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22405.

The product of its digits is 286720, while the sum is 44.

The square root of 1154847842 is about 33983.0522760979. The cubic root of 1154847842 is about 1049.1596729319.

The spelling of 1154847842 in words is "one billion, one hundred fifty-four million, eight hundred forty-seven thousand, eight hundred forty-two".