1240555355 has 8 divisors (see below), whose sum is σ = 1603179312. Its totient is φ = 916102368.

The previous prime is 1240555339. The next prime is 1240555367. The reversal of 1240555355 is 5535550421.

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 1240555355 - 2⁴ = 1240555339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9542669 + ... + 9542798.

It is an arithmetic number, because the mean of its divisors is an integer number (200397414).

Almost surely, 2^1240555355 is an apocalyptic number.

1240555355 is a deficient number, since it is larger than the sum of its proper divisors (362623957).

1240555355 is a wasteful number, since it uses less digits than its factorization.

1240555355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19085485.

The product of its (nonzero) digits is 75000, while the sum is 35.

The square root of 1240555355 is about 35221.5183517122. The cubic root of 1240555355 is about 1074.4974337348.

The spelling of 1240555355 in words is "one billion, two hundred forty million, five hundred fifty-five thousand, three hundred fifty-five".