1240196555 has 32 divisors (see below), whose sum is σ = 1638403200. Its totient is φ = 895564800.

The previous prime is 1240196549. The next prime is 1240196561. The reversal of 1240196555 is 5556910421.

It is an interprime number because it is at equal distance from previous prime (1240196549) and next prime (1240196561).

It is a de Polignac number, because none of the positive numbers 2^k-1240196555 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 2063255 + ... + 2063855.

It is an arithmetic number, because the mean of its divisors is an integer number (51200100).

Almost surely, 2^1240196555 is an apocalyptic number.

1240196555 is a deficient number, since it is larger than the sum of its proper divisors (398206645).

1240196555 is a wasteful number, since it uses less digits than its factorization.

1240196555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 1240196555 is about 35216.4245061875. The cubic root of 1240196555 is about 1074.3938331305.

The spelling of 1240196555 in words is "one billion, two hundred forty million, one hundred ninety-six thousand, five hundred fifty-five".