1142147069 has 8 divisors (see below), whose sum is σ = 1305521280. Its totient is φ = 978825456.

The previous prime is 1142147063. The next prime is 1142147089. The reversal of 1142147069 is 9607412411.

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

It is not a de Polignac number, because 1142147069 - 2²⁰ = 1141098493 is a prime.

It is a super-2 number, since 2×1142147069² = 2608999854450581522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142147063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62147 + ... + 78399.

It is an arithmetic number, because the mean of its divisors is an integer number (163190160).

Almost surely, 2^1142147069 is an apocalyptic number.

It is an amenable number.

1142147069 is a deficient number, since it is larger than the sum of its proper divisors (163374211).

1142147069 is a wasteful number, since it uses less digits than its factorization.

1142147069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26299.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1142147069 is about 33795.6664233745. Note that the first 3 decimals coincide. The cubic root of 1142147069 is about 1045.2993408459.

The spelling of 1142147069 in words is "one billion, one hundred forty-two million, one hundred forty-seven thousand, sixty-nine".