1240055545 has 8 divisors (see below), whose sum is σ = 1490925960. Its totient is φ = 990138240.

The previous prime is 1240055533. The next prime is 1240055549. The reversal of 1240055545 is 5455500421.

1240055545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13935289 + 1226120256 = 3733^2 + 35016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1240055545 - 2¹³ = 1240047353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240055549) 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, 235410 + ... + 240619.

It is an arithmetic number, because the mean of its divisors is an integer number (186365745).

Almost surely, 2^1240055545 is an apocalyptic number.

It is an amenable number.

1240055545 is a deficient number, since it is larger than the sum of its proper divisors (250870415).

1240055545 is an equidigital number, since it uses as much as digits as its factorization.

1240055545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476555.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 1240055545 is about 35214.4224004881. The cubic root of 1240055545 is about 1074.3531121614.

Adding to 1240055545 its reverse (5455500421), we get a palindrome (6695555966).

The spelling of 1240055545 in words is "one billion, two hundred forty million, fifty-five thousand, five hundred forty-five".