4021423122397 has 2 divisors, whose sum is σ = 4021423122398. Its totient is φ = 4021423122396.

The previous prime is 4021423122347. The next prime is 4021423122499. The reversal of 4021423122397 is 7932213241204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3934645156836 + 86777965561 = 1983594^2 + 294581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021423122397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021423122307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010711561198 + 2010711561199.

It is an arithmetic number, because the mean of its divisors is an integer number (2010711561199).

Almost surely, 2^{4021423122397} is an apocalyptic number.

It is an amenable number.

4021423122397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021423122397 is an equidigital number, since it uses as much as digits as its factorization.

4021423122397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 4021423122397 in words is "four trillion, twenty-one billion, four hundred twenty-three million, one hundred twenty-two thousand, three hundred ninety-seven".