1240220432 has 20 divisors (see below), whose sum is σ = 2621375376. Its totient is φ = 563736480.

The previous prime is 1240220413. The next prime is 1240220437. The reversal of 1240220432 is 2340220421.

It is not an unprimeable number, because it can be changed into a prime (1240220437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523178 + ... + 3523529.

Almost surely, 2^1240220432 is an apocalyptic number.

It is an amenable number.

1240220432 is an abundant number, since it is smaller than the sum of its proper divisors (1381154944).

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

1240220432 is a wasteful number, since it uses less digits than its factorization.

1240220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7046726 (or 7046720 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1240220432 is about 35216.7635083067. The cubic root of 1240220432 is about 1074.4007280421.

Adding to 1240220432 its reverse (2340220421), we get a palindrome (3580440853).

The spelling of 1240220432 in words is "one billion, two hundred forty million, two hundred twenty thousand, four hundred thirty-two".