1204143442 has 4 divisors (see below), whose sum is σ = 1806215166. Its totient is φ = 602071720.

The previous prime is 1204143433. The next prime is 1204143443. The reversal of 1204143442 is 2443414021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443414021 = 293 ⋅8339297.

It can be written as a sum of positive squares in only one way, i.e., 1070532961 + 133610481 = 32719^2 + 11559^2 .

It is a super-2 number, since 2×1204143442² = 2899922857823214728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1204143443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301035859 + ... + 301035862.

Almost surely, 2^1204143442 is an apocalyptic number.

1204143442 is a deficient number, since it is larger than the sum of its proper divisors (602071724).

1204143442 is an equidigital number, since it uses as much as digits as its factorization.

1204143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602071723.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1204143442 is about 34700.7700490926. The cubic root of 1204143442 is about 1063.8802375472.

Adding to 1204143442 its reverse (2443414021), we get a palindrome (3647557463).

The spelling of 1204143442 in words is "one billion, two hundred four million, one hundred forty-three thousand, four hundred forty-two".