1242200455 has 16 divisors (see below), whose sum is σ = 1605083040. Its totient is φ = 919447552.

The previous prime is 1242200447. The next prime is 1242200507. The reversal of 1242200455 is 5540022421.

It is a cyclic number.

It is not a de Polignac number, because 1242200455 - 2³ = 1242200447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118834 + ... + 128863.

It is an arithmetic number, because the mean of its divisors is an integer number (100317690).

Almost surely, 2^1242200455 is an apocalyptic number.

1242200455 is a deficient number, since it is larger than the sum of its proper divisors (362882585).

1242200455 is a wasteful number, since it uses less digits than its factorization.

1242200455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247778.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1242200455 is about 35244.8642358004. The cubic root of 1242200455 is about 1074.9721874903.

Adding to 1242200455 its reverse (5540022421), we get a palindrome (6782222876).

The spelling of 1242200455 in words is "one billion, two hundred forty-two million, two hundred thousand, four hundred fifty-five".