1243204142 has 8 divisors (see below), whose sum is σ = 1945884816. Its totient is φ = 594575872.

The previous prime is 1243204133. The next prime is 1243204177. The reversal of 1243204142 is 2414023421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13513043 + ... + 13513134.

It is an arithmetic number, because the mean of its divisors is an integer number (243235602).

Almost surely, 2^1243204142 is an apocalyptic number.

1243204142 is a deficient number, since it is larger than the sum of its proper divisors (702680674).

1243204142 is a wasteful number, since it uses less digits than its factorization.

1243204142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27026202.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1243204142 is about 35259.1001303210. The cubic root of 1243204142 is about 1075.2616322268.

Adding to 1243204142 its reverse (2414023421), we get a palindrome (3657227563).

The spelling of 1243204142 in words is "one billion, two hundred forty-three million, two hundred four thousand, one hundred forty-two".