1240520049 has 8 divisors (see below), whose sum is σ = 1837807520. Its totient is φ = 827013348.

The previous prime is 1240520027. The next prime is 1240520063. The reversal of 1240520049 is 9400250421.

1240520049 is a `hidden beast` number, since 12 + 405 + 200 + 49 = 666.

It is not a de Polignac number, because 1240520049 - 2¹⁶ = 1240454513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45945187 = 1240520049 / (1 + 2 + 4 + 0 + 5 + 2 + 0 + 0 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240520009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22972567 + ... + 22972620.

It is an arithmetic number, because the mean of its divisors is an integer number (229725940).

Almost surely, 2^1240520049 is an apocalyptic number.

It is an amenable number.

1240520049 is a deficient number, since it is larger than the sum of its proper divisors (597287471).

1240520049 is an equidigital number, since it uses as much as digits as its factorization.

1240520049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45945196 (or 45945190 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1240520049 is about 35221.0171488559. The cubic root of 1240520049 is about 1074.4872402985.

The spelling of 1240520049 in words is "one billion, two hundred forty million, five hundred twenty thousand, forty-nine".