1240249801 has 16 divisors (see below), whose sum is σ = 1435017600. Its totient is φ = 1049932800.

The previous prime is 1240249793. The next prime is 1240249811. The reversal of 1240249801 is 1089420421.

It is not a de Polignac number, because 1240249801 - 2³ = 1240249793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240249811) 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 15 ways as a sum of consecutive naturals, for example, 315490 + ... + 319396.

It is an arithmetic number, because the mean of its divisors is an integer number (89688600).

Almost surely, 2^1240249801 is an apocalyptic number.

It is an amenable number.

1240249801 is a deficient number, since it is larger than the sum of its proper divisors (194767799).

1240249801 is a wasteful number, since it uses less digits than its factorization.

1240249801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1240249801 is about 35217.1804805552. The cubic root of 1240249801 is about 1074.4092087458.

The spelling of 1240249801 in words is "one billion, two hundred forty million, two hundred forty-nine thousand, eight hundred one".