1142172237 has 8 divisors (see below), whose sum is σ = 1528964640. Its totient is φ = 758414000.

The previous prime is 1142172233. The next prime is 1142172287. The reversal of 1142172237 is 7322712411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142172237 - 2² = 1142172233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142172233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757662 + ... + 759167.

It is an arithmetic number, because the mean of its divisors is an integer number (191120580).

Almost surely, 2^1142172237 is an apocalyptic number.

It is an amenable number.

1142172237 is a deficient number, since it is larger than the sum of its proper divisors (386792403).

1142172237 is a wasteful number, since it uses less digits than its factorization.

1142172237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517083.

The product of its digits is 4704, while the sum is 30.

The square root of 1142172237 is about 33796.0387767561. The cubic root of 1142172237 is about 1045.3070187539.

Adding to 1142172237 its reverse (7322712411), we get a palindrome (8464884648).

The spelling of 1142172237 in words is "one billion, one hundred forty-two million, one hundred seventy-two thousand, two hundred thirty-seven".