1240124605 has 16 divisors (see below), whose sum is σ = 1496230704. Its totient is φ = 986728960.

The previous prime is 1240124591. The next prime is 1240124621. The reversal of 1240124605 is 5064210421.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 289204036 + 950920569 = 17006^2 + 30837^2 .

It is not a de Polignac number, because 1240124605 - 2⁵ = 1240124573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240124605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300809 + ... + 1301761.

It is an arithmetic number, because the mean of its divisors is an integer number (93514419).

Almost surely, 2^1240124605 is an apocalyptic number.

It is an amenable number.

1240124605 is a deficient number, since it is larger than the sum of its proper divisors (256106099).

1240124605 is an equidigital number, since it uses as much as digits as its factorization.

1240124605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1240124605 is about 35215.4029509815. The cubic root of 1240124605 is about 1074.3730557435.

The spelling of 1240124605 in words is "one billion, two hundred forty million, one hundred twenty-four thousand, six hundred five".