1154533542 has 16 divisors (see below), whose sum is σ = 2315725632. Its totient is φ = 383734760.

The previous prime is 1154533487. The next prime is 1154533547. The reversal of 1154533542 is 2453354511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154533547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275184 + ... + 279347.

It is an arithmetic number, because the mean of its divisors is an integer number (144732852).

Almost surely, 2^1154533542 is an apocalyptic number.

1154533542 is an abundant number, since it is smaller than the sum of its proper divisors (1161192090).

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

1154533542 is a wasteful number, since it uses less digits than its factorization.

1154533542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554883.

The product of its digits is 36000, while the sum is 33.

The square root of 1154533542 is about 33978.4275975213. The cubic root of 1154533542 is about 1049.0644855567.

The spelling of 1154533542 in words is "one billion, one hundred fifty-four million, five hundred thirty-three thousand, five hundred forty-two".