1240213164 has 12 divisors (see below), whose sum is σ = 2893830744. Its totient is φ = 413404384.

The previous prime is 1240213151. The next prime is 1240213171. The reversal of 1240213164 is 4613120421.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51675537 + ... + 51675560.

It is an arithmetic number, because the mean of its divisors is an integer number (241152562).

Almost surely, 2^1240213164 is an apocalyptic number.

It is an amenable number.

1240213164 is an abundant number, since it is smaller than the sum of its proper divisors (1653617580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240213164 is a wasteful number, since it uses less digits than its factorization.

1240213164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103351104 (or 103351102 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1240213164 is about 35216.6603186617. The cubic root of 1240213164 is about 1074.3986292862.

Adding to 1240213164 its reverse (4613120421), we get a palindrome (5853333585).

The spelling of 1240213164 in words is "one billion, two hundred forty million, two hundred thirteen thousand, one hundred sixty-four".