1240520026 has 16 divisors (see below), whose sum is σ = 1914104808. Its totient is φ = 602611200.

The previous prime is 1240520009. The next prime is 1240520027. The reversal of 1240520026 is 6200250421.

It can be written as a sum of positive squares in 4 ways, for example, as 1118969401 + 121550625 = 33451^2 + 11025^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1240519979 and 1240520006.

It is not an unprimeable number, because it can be changed into a prime (1240520027) 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, 11625 + ... + 51148.

Almost surely, 2^1240520026 is an apocalyptic number.

1240520026 is a deficient number, since it is larger than the sum of its proper divisors (673584782).

1240520026 is a wasteful number, since it uses less digits than its factorization.

1240520026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63057.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240520026 is about 35221.0168223463. The cubic root of 1240520026 is about 1074.4872336579.

Adding to 1240520026 its reverse (6200250421), we get a palindrome (7440770447).

The spelling of 1240520026 in words is "one billion, two hundred forty million, five hundred twenty thousand, twenty-six".