1240233421 has 8 divisors (see below), whose sum is σ = 1429953984. Its totient is φ = 1053648960.

The previous prime is 1240233383. The next prime is 1240233433. The reversal of 1240233421 is 1243320421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1240233421 - 2¹¹ = 1240231373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240233392 and 1240233401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240234421) 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, 783175 + ... + 784756.

It is an arithmetic number, because the mean of its divisors is an integer number (178744248).

Almost surely, 2^1240233421 is an apocalyptic number.

It is an amenable number.

1240233421 is a deficient number, since it is larger than the sum of its proper divisors (189720563).

1240233421 is a wasteful number, since it uses less digits than its factorization.

1240233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568051.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1240233421 is about 35216.9479228397. The cubic root of 1240233421 is about 1074.4044788115.

Adding to 1240233421 its reverse (1243320421), we get a palindrome (2483553842).

The spelling of 1240233421 in words is "one billion, two hundred forty million, two hundred thirty-three thousand, four hundred twenty-one".