1243102142 has 16 divisors (see below), whose sum is σ = 1902558672. Its totient is φ = 609043200.

The previous prime is 1243102129. The next prime is 1243102177. The reversal of 1243102142 is 2412013421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12128 + ... + 51315.

It is an arithmetic number, because the mean of its divisors is an integer number (118909917).

Almost surely, 2^1243102142 is an apocalyptic number.

1243102142 is a deficient number, since it is larger than the sum of its proper divisors (659456530).

1243102142 is a wasteful number, since it uses less digits than its factorization.

1243102142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63643.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1243102142 is about 35257.6536655518. The cubic root of 1243102142 is about 1075.2322244295.

Adding to 1243102142 its reverse (2412013421), we get a palindrome (3655115563).

The spelling of 1243102142 in words is "one billion, two hundred forty-three million, one hundred two thousand, one hundred forty-two".