1423420140997 has 2 divisors, whose sum is σ = 1423420140998. Its totient is φ = 1423420140996.

The previous prime is 1423420140983. The next prime is 1423420141049. The reversal of 1423420140997 is 7990410243241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240993772001 + 182426368996 = 1113999^2 + 427114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423420140997 - 2¹⁹ = 1423419616709 is a prime.

It is a super-2 number, since 2×1423420140997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423420140097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711710070498 + 711710070499.

It is an arithmetic number, because the mean of its divisors is an integer number (711710070499).

Almost surely, 2^{1423420140997} is an apocalyptic number.

It is an amenable number.

1423420140997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423420140997 is an equidigital number, since it uses as much as digits as its factorization.

1423420140997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 1423420140997 in words is "one trillion, four hundred twenty-three billion, four hundred twenty million, one hundred forty thousand, nine hundred ninety-seven".