1242202254455 has 4 divisors (see below), whose sum is σ = 1490642705352. Its totient is φ = 993761803560.

The previous prime is 1242202254439. The next prime is 1242202254463. The reversal of 1242202254455 is 5544522022421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1242202254455 - 2⁴ = 1242202254439 is a prime.

It is a Duffinian number.

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, 124220225441 + ... + 124220225450.

It is an arithmetic number, because the mean of its divisors is an integer number (372660676338).

Almost surely, 2^{1242202254455} is an apocalyptic number.

1242202254455 is a deficient number, since it is larger than the sum of its proper divisors (248440450897).

1242202254455 is an equidigital number, since it uses as much as digits as its factorization.

1242202254455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248440450896.

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 1242202254455 its reverse (5544522022421), we get a palindrome (6786724276876).

The spelling of 1242202254455 in words is "one trillion, two hundred forty-two billion, two hundred two million, two hundred fifty-four thousand, four hundred fifty-five".