1242002634123 has 6 divisors (see below), whose sum is σ = 1656006085884. Its totient is φ = 828000469224.

The previous prime is 1242002634101. The next prime is 1242002634203. The reversal of 1242002634123 is 3214362002421.

It is not a de Polignac number, because 1242002634123 - 2¹³ = 1242002625931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242000634123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1608573 + ... + 2252001.

It is an arithmetic number, because the mean of its divisors is an integer number (276001014314).

Almost surely, 2^{1242002634123} is an apocalyptic number.

1242002634123 is a deficient number, since it is larger than the sum of its proper divisors (414003451761).

1242002634123 is an frugal number, since it uses more digits than its factorization.

1242002634123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286861 (or 643432 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1242002634123 its reverse (3214362002421), we get a palindrome (4456364636544).

The spelling of 1242002634123 in words is "one trillion, two hundred forty-two billion, two million, six hundred thirty-four thousand, one hundred twenty-three".