1243201342 has 4 divisors (see below), whose sum is σ = 1864802016. Its totient is φ = 621600670.

The previous prime is 1243201327. The next prime is 1243201387. The reversal of 1243201342 is 2431023421.

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

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, 310800334 + ... + 310800337.

It is an arithmetic number, because the mean of its divisors is an integer number (466200504).

Almost surely, 2^1243201342 is an apocalyptic number.

1243201342 is a deficient number, since it is larger than the sum of its proper divisors (621600674).

1243201342 is an equidigital number, since it uses as much as digits as its factorization.

1243201342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621600673.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1243201342 is about 35259.0604242371. The cubic root of 1243201342 is about 1075.2608249754.

Adding to 1243201342 its reverse (2431023421), we get a palindrome (3674224763).

The spelling of 1243201342 in words is "one billion, two hundred forty-three million, two hundred one thousand, three hundred forty-two".