1232021240 has 16 divisors (see below), whose sum is σ = 2772047880. Its totient is φ = 492808480.

The previous prime is 1232021221. The next prime is 1232021261. The reversal of 1232021240 is 421202321.

It is a super-2 number, since 2×1232021240² = 3035752671622275200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15400226 + ... + 15400305.

Almost surely, 2^1232021240 is an apocalyptic number.

1232021240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232021240 is an abundant number, since it is smaller than the sum of its proper divisors (1540026640).

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

1232021240 is a wasteful number, since it uses less digits than its factorization.

1232021240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30800542 (or 30800538 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1232021240 is about 35100.1601135949. The cubic root of 1232021240 is about 1072.0278428018.

Adding to 1232021240 its reverse (421202321), we get a palindrome (1653223561).

The spelling of 1232021240 in words is "one billion, two hundred thirty-two million, twenty-one thousand, two hundred forty".