1219142 has 4 divisors (see below), whose sum is σ = 1828716. Its totient is φ = 609570.

The previous prime is 1219129. The next prime is 1219147. The reversal of 1219142 is 2419121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2419121 = 1327 ⋅1823.

It is a pancake number, because a pancake can be divided into 1219142 parts by 1561 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304784 + ... + 304787.

It is an arithmetic number, because the mean of its divisors is an integer number (457179).

2^1219142 is an apocalyptic number.

1219142 is a deficient number, since it is larger than the sum of its proper divisors (609574).

1219142 is an equidigital number, since it uses as much as digits as its factorization.

1219142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609573.

The product of its digits is 144, while the sum is 20.

The square root of 1219142 is about 1104.1476350561. The cubic root of 1219142 is about 106.8279180008.

The spelling of 1219142 in words is "one million, two hundred nineteen thousand, one hundred forty-two".