1240562541 has 4 divisors (see below), whose sum is σ = 1654083392. Its totient is φ = 827041692.

The previous prime is 1240562483. The next prime is 1240562549. The reversal of 1240562541 is 1452650421.

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 not a de Polignac number, because 1240562541 - 2¹³ = 1240554349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240562499 and 1240562508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240562549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206760421 + ... + 206760426.

It is an arithmetic number, because the mean of its divisors is an integer number (413520848).

Almost surely, 2^1240562541 is an apocalyptic number.

It is an amenable number.

1240562541 is a deficient number, since it is larger than the sum of its proper divisors (413520851).

1240562541 is an equidigital number, since it uses as much as digits as its factorization.

1240562541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413520850.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1240562541 is about 35221.6203630668. The cubic root of 1240562541 is about 1074.4995084303.

The spelling of 1240562541 in words is "one billion, two hundred forty million, five hundred sixty-two thousand, five hundred forty-one".