1144534542 has 16 divisors (see below), whose sum is σ = 2350936272. Its totient is φ = 371200320.

The previous prime is 1144534529. The next prime is 1144534543. The reversal of 1144534542 is 2454354411.

It is a happy number.

It is a super-2 number, since 2×1144534542² = 2619918635662299528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144534543) 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, 2577559 + ... + 2578002.

It is an arithmetic number, because the mean of its divisors is an integer number (146933517).

Almost surely, 2^1144534542 is an apocalyptic number.

1144534542 is an abundant number, since it is smaller than the sum of its proper divisors (1206401730).

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

1144534542 is a wasteful number, since it uses less digits than its factorization.

1144534542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155603.

The product of its digits is 38400, while the sum is 33.

The square root of 1144534542 is about 33830.9701604905. The cubic root of 1144534542 is about 1046.0271767900.

Adding to 1144534542 its reverse (2454354411), we get a palindrome (3598888953).

The spelling of 1144534542 in words is "one billion, one hundred forty-four million, five hundred thirty-four thousand, five hundred forty-two".