240422403421 has 2 divisors, whose sum is σ = 240422403422. Its totient is φ = 240422403420.

The previous prime is 240422403409. The next prime is 240422403443. The reversal of 240422403421 is 124304224042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147082988196 + 93339415225 = 383514^2 + 305515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240422403421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240422403421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240422403821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120211201710 + 120211201711.

It is an arithmetic number, because the mean of its divisors is an integer number (120211201711).

Almost surely, 2^240422403421 is an apocalyptic number.

It is an amenable number.

240422403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

240422403421 is an equidigital number, since it uses as much as digits as its factorization.

240422403421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 240422403421 its reverse (124304224042), we get a palindrome (364726627463).

The spelling of 240422403421 in words is "two hundred forty billion, four hundred twenty-two million, four hundred three thousand, four hundred twenty-one".