1142181903 has 8 divisors (see below), whose sum is σ = 1603062400. Its totient is φ = 721378008.

The previous prime is 1142181893. The next prime is 1142181919. The reversal of 1142181903 is 3091812411.

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

It is not a de Polignac number, because 1142181903 - 2¹⁷ = 1142050831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142181973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10019083 + ... + 10019196.

It is an arithmetic number, because the mean of its divisors is an integer number (200382800).

Almost surely, 2^1142181903 is an apocalyptic number.

1142181903 is a deficient number, since it is larger than the sum of its proper divisors (460880497).

1142181903 is a wasteful number, since it uses less digits than its factorization.

1142181903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20038301.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1142181903 is about 33796.1817813788. The cubic root of 1142181903 is about 1045.3099674946.

The spelling of 1142181903 in words is "one billion, one hundred forty-two million, one hundred eighty-one thousand, nine hundred three".