1142273919 has 8 divisors (see below), whose sum is σ = 1523467440. Its totient is φ = 761298176.

The previous prime is 1142273917. The next prime is 1142273927. The reversal of 1142273919 is 9193722411.

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 1142273919 - 2¹ = 1142273917 is a prime.

It is a super-2 number, since 2×1142273919² = 2609579412055237122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142273917) 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, 41784 + ... + 63485.

It is an arithmetic number, because the mean of its divisors is an integer number (190433430).

Almost surely, 2^1142273919 is an apocalyptic number.

1142273919 is a deficient number, since it is larger than the sum of its proper divisors (381193521).

1142273919 is a wasteful number, since it uses less digits than its factorization.

1142273919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108889.

The product of its digits is 27216, while the sum is 39.

The square root of 1142273919 is about 33797.5430911775. The cubic root of 1142273919 is about 1045.3380373548.

The spelling of 1142273919 in words is "one billion, one hundred forty-two million, two hundred seventy-three thousand, nine hundred nineteen".