1138261242 has 8 divisors (see below), whose sum is σ = 2276522496. Its totient is φ = 379420412.

The previous prime is 1138261211. The next prime is 1138261259. The reversal of 1138261242 is 2421628311.

It is a sphenic number, since it is the product of 3 distinct primes.

1138261242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94855098 + ... + 94855109.

It is an arithmetic number, because the mean of its divisors is an integer number (284565312).

Almost surely, 2^1138261242 is an apocalyptic number.

1138261242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1138261242 is a wasteful number, since it uses less digits than its factorization.

1138261242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189710212.

The product of its digits is 4608, while the sum is 30.

The square root of 1138261242 is about 33738.1274228431. The cubic root of 1138261242 is about 1044.1125504383.

Adding to 1138261242 its reverse (2421628311), we get a palindrome (3559889553).

The spelling of 1138261242 in words is "one billion, one hundred thirty-eight million, two hundred sixty-one thousand, two hundred forty-two".