1240106549 has 4 divisors (see below), whose sum is σ = 1352843520. Its totient is φ = 1127369580.

The previous prime is 1240106537. The next prime is 1240106597. The reversal of 1240106549 is 9456010421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240106549 - 2⁴ = 1240106533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240100549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56368469 + ... + 56368490.

It is an arithmetic number, because the mean of its divisors is an integer number (338210880).

Almost surely, 2^1240106549 is an apocalyptic number.

It is an amenable number.

1240106549 is a deficient number, since it is larger than the sum of its proper divisors (112736971).

1240106549 is a wasteful number, since it uses less digits than its factorization.

1240106549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112736970.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1240106549 is about 35215.1465849569. The cubic root of 1240106549 is about 1074.3678414895.

The spelling of 1240106549 in words is "one billion, two hundred forty million, one hundred six thousand, five hundred forty-nine".