1242140132344 has 8 divisors (see below), whose sum is σ = 2329012748160. Its totient is φ = 621070066168.

The previous prime is 1242140132339. The next prime is 1242140132347. The reversal of 1242140132344 is 4432310412421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242140132347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77633758264 + ... + 77633758279.

It is an arithmetic number, because the mean of its divisors is an integer number (291126593520).

Almost surely, 2^{1242140132344} is an apocalyptic number.

It is an amenable number.

1242140132344 is a deficient number, since it is larger than the sum of its proper divisors (1086872615816).

1242140132344 is a wasteful number, since it uses less digits than its factorization.

1242140132344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155267516549 (or 155267516545 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1242140132344 its reverse (4432310412421), we get a palindrome (5674450544765).

The spelling of 1242140132344 in words is "one trillion, two hundred forty-two billion, one hundred forty million, one hundred thirty-two thousand, three hundred forty-four".