1442142923 has 4 divisors (see below), whose sum is σ = 1553077008. Its totient is φ = 1331208840.

The previous prime is 1442142913. The next prime is 1442142937. The reversal of 1442142923 is 3292412441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3292412441 = 23 ⋅143148367.

It is not a de Polignac number, because 1442142923 - 2¹² = 1442138827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442142923.

It is not an unprimeable number, because it can be changed into a prime (1442142913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55467023 + ... + 55467048.

It is an arithmetic number, because the mean of its divisors is an integer number (388269252).

Almost surely, 2^1442142923 is an apocalyptic number.

1442142923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1442142923 is a deficient number, since it is larger than the sum of its proper divisors (110934085).

1442142923 is a wasteful number, since it uses less digits than its factorization.

1442142923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110934084.

The product of its digits is 13824, while the sum is 32.

The square root of 1442142923 is about 37975.5569149420. The cubic root of 1442142923 is about 1129.8031147306.

The spelling of 1442142923 in words is "one billion, four hundred forty-two million, one hundred forty-two thousand, nine hundred twenty-three".