1201143230642 has 4 divisors (see below), whose sum is σ = 1801714845966. Its totient is φ = 600571615320.

The previous prime is 1201143230597. The next prime is 1201143230653. The reversal of 1201143230642 is 2460323411021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1062773366281 + 138369864361 = 1030909^2 + 371981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300285807659 + ... + 300285807662.

Almost surely, 2^{1201143230642} is an apocalyptic number.

1201143230642 is a deficient number, since it is larger than the sum of its proper divisors (600571615324).

1201143230642 is an equidigital number, since it uses as much as digits as its factorization.

1201143230642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600571615323.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1201143230642 its reverse (2460323411021), we get a palindrome (3661466641663).

The spelling of 1201143230642 in words is "one trillion, two hundred one billion, one hundred forty-three million, two hundred thirty thousand, six hundred forty-two".