1154542144 has 56 divisors (see below), whose sum is σ = 2756164160. Its totient is φ = 468758016.

The previous prime is 1154542139. The next prime is 1154542153. The reversal of 1154542144 is 4412454511.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59307 + ... + 76330.

Almost surely, 2^1154542144 is an apocalyptic number.

1154542144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1154542144 is an abundant number, since it is smaller than the sum of its proper divisors (1601622016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154542144 is a wasteful number, since it uses less digits than its factorization.

1154542144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135675 (or 135665 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 1154542144 is about 33978.5541775986. The cubic root of 1154542144 is about 1049.0670909467.

Adding to 1154542144 its reverse (4412454511), we get a palindrome (5566996655).

The spelling of 1154542144 in words is "one billion, one hundred fifty-four million, five hundred forty-two thousand, one hundred forty-four".