1131500542 has 4 divisors (see below), whose sum is σ = 1697250816. Its totient is φ = 565750270.

The previous prime is 1131500519. The next prime is 1131500549. The reversal of 1131500542 is 2450051311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131500549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282875134 + ... + 282875137.

It is an arithmetic number, because the mean of its divisors is an integer number (424312704).

Almost surely, 2^1131500542 is an apocalyptic number.

1131500542 is a deficient number, since it is larger than the sum of its proper divisors (565750274).

1131500542 is an equidigital number, since it uses as much as digits as its factorization.

1131500542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565750273.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1131500542 is about 33637.7844395257. The cubic root of 1131500542 is about 1042.0412762117.

Adding to 1131500542 its reverse (2450051311), we get a palindrome (3581551853).

The spelling of 1131500542 in words is "one billion, one hundred thirty-one million, five hundred thousand, five hundred forty-two".