1423400409973 has 2 divisors, whose sum is σ = 1423400409974. Its totient is φ = 1423400409972.

The previous prime is 1423400409919. The next prime is 1423400409983. The reversal of 1423400409973 is 3799040043241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420427761489 + 2972648484 = 1191817^2 + 54522^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423400409973 - 2¹⁷ = 1423400278901 is a prime.

It is a super-2 number, since 2×1423400409973² (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 (1423400409983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711700204986 + 711700204987.

It is an arithmetic number, because the mean of its divisors is an integer number (711700204987).

Almost surely, 2^{1423400409973} is an apocalyptic number.

It is an amenable number.

1423400409973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423400409973 is an equidigital number, since it uses as much as digits as its factorization.

1423400409973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 1423400409973 in words is "one trillion, four hundred twenty-three billion, four hundred million, four hundred nine thousand, nine hundred seventy-three".