1154143242 has 80 divisors (see below), whose sum is σ = 2972441472. Its totient is φ = 327875040.

The previous prime is 1154143229. The next prime is 1154143253. The reversal of 1154143242 is 2423414511.

1154143242 is a `hidden beast` number, since 1 + 1 + 5 + 414 + 3 + 242 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 202443 + ... + 208065.

Almost surely, 2^1154143242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154143242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486220736).

1154143242 is an abundant number, since it is smaller than the sum of its proper divisors (1818298230).

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

1154143242 is a wasteful number, since it uses less digits than its factorization.

1154143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825 (or 5816 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1154143242 is about 33972.6837621051. The cubic root of 1154143242 is about 1048.9462571404.

Adding to 1154143242 its reverse (2423414511), we get a palindrome (3577557753).

The spelling of 1154143242 in words is "one billion, one hundred fifty-four million, one hundred forty-three thousand, two hundred forty-two".