1204122142 has 4 divisors (see below), whose sum is σ = 1806183216. Its totient is φ = 602061070.

The previous prime is 1204122133. The next prime is 1204122167. The reversal of 1204122142 is 2412214021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2412214021 = 7 ⋅344602003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301030534 + ... + 301030537.

It is an arithmetic number, because the mean of its divisors is an integer number (451545804).

Almost surely, 2^1204122142 is an apocalyptic number.

1204122142 is a deficient number, since it is larger than the sum of its proper divisors (602061074).

1204122142 is an equidigital number, since it uses as much as digits as its factorization.

1204122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602061073.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1204122142 is about 34700.4631381196. The cubic root of 1204122142 is about 1063.8739645452.

Adding to 1204122142 its reverse (2412214021), we get a palindrome (3616336163).

The spelling of 1204122142 in words is "one billion, two hundred four million, one hundred twenty-two thousand, one hundred forty-two".