240420122421 has 8 divisors (see below), whose sum is σ = 331613962080. Its totient is φ = 154753182192.

The previous prime is 240420122417. The next prime is 240420122489. The reversal of 240420122421 is 124221024042.

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 240420122421 - 2² = 240420122417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240420122391 and 240420122400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240420122401) 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, 1381724755 + ... + 1381724928.

It is an arithmetic number, because the mean of its divisors is an integer number (41451745260).

Almost surely, 2^240420122421 is an apocalyptic number.

It is an amenable number.

240420122421 is a deficient number, since it is larger than the sum of its proper divisors (91193839659).

240420122421 is a wasteful number, since it uses less digits than its factorization.

240420122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763449715.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 240420122421 its reverse (124221024042), we get a palindrome (364641146463).

The spelling of 240420122421 in words is "two hundred forty billion, four hundred twenty million, one hundred twenty-two thousand, four hundred twenty-one".