1242440551001 has 8 divisors (see below), whose sum is σ = 1338030450624. Its totient is φ = 1146853158480.

The previous prime is 1242440550979. The next prime is 1242440551073. The reversal of 1242440551001 is 1001550442421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1242440551001 - 2¹⁸ = 1242440288857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242440551091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474116 + ... + 1646106.

It is an arithmetic number, because the mean of its divisors is an integer number (167253806328).

Almost surely, 2^{1242440551001} is an apocalyptic number.

It is an amenable number.

1242440551001 is a deficient number, since it is larger than the sum of its proper divisors (95589899623).

1242440551001 is a wasteful number, since it uses less digits than its factorization.

1242440551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253551.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 1242440551001 its reverse (1001550442421), we get a palindrome (2243990993422).

The spelling of 1242440551001 in words is "one trillion, two hundred forty-two billion, four hundred forty million, five hundred fifty-one thousand, one".