1142243200 has 96 divisors (see below), whose sum is σ = 3224860560. Its totient is φ = 391618560.

The previous prime is 1142243183. The next prime is 1142243237. The reversal of 1142243200 is 23422411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3097 + ... + 47896.

Almost surely, 2^1142243200 is an apocalyptic number.

1142243200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142243200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612430280).

1142243200 is an abundant number, since it is smaller than the sum of its proper divisors (2082617360).

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

1142243200 is an equidigital number, since it uses as much as digits as its factorization.

1142243200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51024 (or 51007 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1142243200 is about 33797.0886320109. The cubic root of 1142243200 is about 1045.3286665648.

Adding to 1142243200 its reverse (23422411), we get a palindrome (1165665611).

The spelling of 1142243200 in words is "one billion, one hundred forty-two million, two hundred forty-three thousand, two hundred".