1142019 has 20 divisors (see below), whose sum is σ = 1783056. Its totient is φ = 727056.

The previous prime is 1142017. The next prime is 1142021. The reversal of 1142019 is 9102411.

It is an interprime number because it is at equal distance from previous prime (1142017) and next prime (1142021).

It is not a de Polignac number, because 1142019 - 2¹ = 1142017 is a prime.

It is a super-2 number, since 2×1142019² = 2608414792722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1141992 and 1142010.

It is not an unprimeable number, because it can be changed into a prime (1142017) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1557 + ... + 2169.

2^1142019 is an apocalyptic number.

1142019 is a deficient number, since it is larger than the sum of its proper divisors (641037).

1142019 is an equidigital number, since it uses as much as digits as its factorization.

1142019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1142019 is about 1068.6528903250. The cubic root of 1142019 is about 104.5260269565.

The spelling of 1142019 in words is "one million, one hundred forty-two thousand, nineteen".