1240604421 has 8 divisors (see below), whose sum is σ = 1890444864. Its totient is φ = 708916800.

The previous prime is 1240604419. The next prime is 1240604447. The reversal of 1240604421 is 1244060421.

It is a happy number.

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

It is not a de Polignac number, because 1240604421 - 2¹ = 1240604419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240604391 and 1240604400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240606421) 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, 29538180 + ... + 29538221.

It is an arithmetic number, because the mean of its divisors is an integer number (236305608).

Almost surely, 2^1240604421 is an apocalyptic number.

It is an amenable number.

1240604421 is a deficient number, since it is larger than the sum of its proper divisors (649840443).

1240604421 is an equidigital number, since it uses as much as digits as its factorization.

1240604421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59076411.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1240604421 is about 35222.2148792491. The cubic root of 1240604421 is about 1074.5115995937.

Adding to 1240604421 its reverse (1244060421), we get a palindrome (2484664842).

The spelling of 1240604421 in words is "one billion, two hundred forty million, six hundred four thousand, four hundred twenty-one".