1240554255 has 32 divisors (see below), whose sum is σ = 2036441088. Its totient is φ = 644649600.

The previous prime is 1240554253. The next prime is 1240554307. The reversal of 1240554255 is 5524550421.

It is not a de Polignac number, because 1240554255 - 2¹ = 1240554253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240554253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91570 + ... + 104240.

It is an arithmetic number, because the mean of its divisors is an integer number (63638784).

Almost surely, 2^1240554255 is an apocalyptic number.

1240554255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1240554255 is a deficient number, since it is larger than the sum of its proper divisors (795886833).

1240554255 is a wasteful number, since it uses less digits than its factorization.

1240554255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12847.

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 1240554255 is about 35221.5027362547. The cubic root of 1240554255 is about 1074.4971161493.

The spelling of 1240554255 in words is "one billion, two hundred forty million, five hundred fifty-four thousand, two hundred fifty-five".